<PAGE>

                                  EXHIBIT 24

                              POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Stephen A. Sasser and
Lawrence W. DeLeon, and each of them, his true and lawful attorneys-in-fact and
agents with full power of substitution and resubstitution, for him and in his
name, place and stead in any and all capacities, to sign such Annual Report on
Form 10-K, and to file the same with all exhibits and financial statements and
schedules thereto, and other documents in connection therewith, including any
amendment thereto, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act and thing requisite and necessary to be done
in and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said attorneys-in-
fact and agents or any of them or their or his substitute or substitutes may
lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ Lawrence J. Fox 
                                        --------------------------------------
                                        Lawrence J. Fox
                                        Chairman of the Board, Chief Executive
                                        Officer and Director





                                       58

<PAGE>

                                POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Lawrence J. Fox and
Lawrence W. DeLeon, and each of them, his true and lawful attorneys-in-fact and
agents with full power of substitution and resubstitution, for him and in his
name, place and stead in any and all capacities, to sign such Annual Report on
Form 10-K, and to file the same with all exhibits and financial statements and
schedules thereto, and other documents in connection therewith, including any
amendment thereto, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act and thing requisite and necessary to be done
in and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said attorneys-in-
fact and agents or any of them or their or his substitute or substitutes may
lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ Stephen A. Sasser
                                        ---------------------------------------
                                        Stephen A. Sasser
                                        President, Chief Operating Officer and
                                        Director 







                                      59

<PAGE>

                                POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Lawrence J. Fox and
Stephen A. Sasser, and each of them, his true and lawful attorneys-in-fact and
agents with full power of substitution and resubstitution, for him and in his
name, place and stead in any and all capacities, to sign such Annual Report on
Form 10-K, and to file the same with all exhibits and financial statements and
schedules thereto, and other documents in connection therewith, including any
amendment thereto, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act and thing requisite and necessary to be done
in and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said attorneys-in-
fact and agents or any of them or their or his substitute or substitutes may
lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ Lawrence W. DeLeon
                                        ---------------------------------------
                                        Lawrence W. DeLeon
                                        Vice President, Chief Financial Officer
                                        and Secretary 








                                      60

<PAGE>

                              POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Lawrence J. Fox,
Stephen A. Sasser and Lawrence W. DeLeon, and each of them, his true and lawful
attorneys-in-fact and agents with full power of substitution and resubstitution,
for him and in his name, place and stead in any and all capacities, to sign such
Annual Report on Form 10-K, and to file the same with all exhibits and financial
statements and schedules thereto, and other documents in connection therewith,
including any amendment thereto, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents or any of them or their or his substitute
or substitutes may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ John T. Tait    
                                        ---------------------------------------
                                        John T. Tait
                                        Director 








                                      61

<PAGE>

                               POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Lawrence J. Fox,
Stephen A. Sasser and Lawrence W. DeLeon, and each of them, his true and lawful
attorneys-in-fact and agents with full power of substitution and resubstitution,
for him and in his name, place and stead in any and all capacities, to sign such
Annual Report on Form 10-K, and to file the same with all exhibits and financial
statements and schedules thereto, and other documents in connection therewith,
including any amendment thereto, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents or any of them or their or his substitute
or substitutes may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ Duke W. Thomas  
                                        ---------------------------------------
                                        Duke W. Thomas
                                        Director 








                                      62

<PAGE>

                              POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Lawrence J. Fox,
Stephen A. Sasser and Lawrence W. DeLeon, and each of them, his true and lawful
attorneys-in-fact and agents with full power of substitution and resubstitution,
for him and in his name, place and stead in any and all capacities, to sign such
Annual Report on Form 10-K, and to file the same with all exhibits and financial
statements and schedules thereto, and other documents in connection therewith,
including any amendment thereto, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents or any of them or their or his substitute
or substitutes may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ Larry L. Liebert
                                        ---------------------------------------
                                        Larry L. Liebert
                                        Director












                                      63

<PAGE>
                                         
                               POWER OF ATTORNEY

     KNOWN ALL MEN BY THESE PRESENTS, that the undersigned officer and/or
director of Symix Systems, Inc., an Ohio corporation which is about to file with
the Securities and Exchange Commission, under the provisions of the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the fiscal
year ended June 30, 1997, hereby constitutes and appoints Lawrence J. Fox,
Stephen A. Sasser and Lawrence W. DeLeon, and each of them, his true and lawful
attorneys-in-fact and agents with full power of substitution and resubstitution,
for him and in his name, place and stead in any and all capacities, to sign such
Annual Report on Form 10-K, and to file the same with all exhibits and financial
statements and schedules thereto, and other documents in connection therewith,
including any amendment thereto, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents or any of them or their or his substitute
or substitutes may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand this 8th day
of September, 1997.

                                        /s/ James A. Rutherford
                                        ---------------------------------------
                                        James A. Rutherford
                                        Director








                                      64