Policy and charging control method for enabling a privileged user of a multiple-user subscription of a telecommunication network to cause a change to a policy or charging applicable to a non-privileged user of the multiple-user subscription, characterized in the method comprising: installing, at establishment or modification of a user plane session associated with the non-privileged user's communication terminal, first policy and charging control, hereinafter abbreviated as "PCC", rules at a policy and charging enforcement function, hereinafter abbreviated as "PCEF", the first PCC rules applying to the non-privileged user of the multiple-user subscription; initiating a service associated with the non-privileged user's communication terminal in accordance with the first PCC rules; accessing, by the communication terminal of the non-privileged user, an authorization control manager function, to request a change of policy or charging applicable to the non-privileged user; transmitting, by the authorization control manager function to a policy and charging rules function, hereinafter abbreviated as "PCRF", the requested change; notifying a communication terminal of the privileged user, by the PCRF, of the requested change; indicating, by the communication terminal of the privileged user, to the authorization control manager function, at least one of: whether the requested change is to be granted, and to which extent the requested change is to be granted; generating, by the PCRF, second PCC rules based on the indication received by the authorization control manager function from the communication terminal of the privileged user; installing, at the PCEF, the second PCC rules to replace the first PCC rules for the non-privileged user; and resuming the service associated with the non-privileged user's communication terminal in accordance with the second PCC rules. installing, at establishment or modification of a user plane session associated with the non-privileged user's communication terminal, first policy and charging control, hereinafter abbreviated as "PCC", rules at a policy and charging enforcement function, hereinafter abbreviated as "PCEF", the first PCC rules applying to the non-privileged user of the multiple-user subscription; initiating a service associated with the non-privileged user's communication terminal in accordance with the first PCC rules; accessing, by the communication terminal of the non-privileged user, an authorization control manager function, to request a change of policy or charging applicable to the non-privileged user; transmitting, by the authorization control manager function to a policy and charging rules function, hereinafter abbreviated as "PCRF", the requested change; notifying a communication terminal of the privileged user, by the PCRF, of the requested change; indicating, by the communication terminal of the privileged user, to the authorization control manager function, at least one of: whether the requested change is to be granted, and to which extent the requested change is to be granted; whether the requested change is to be granted, and to which extent the requested change is to be granted; generating, by the PCRF, second PCC rules based on the indication received by the authorization control manager function from the communication terminal of the privileged user; installing, at the PCEF, the second PCC rules to replace the first PCC rules for the non-privileged user; and resuming the service associated with the non-privileged user's communication terminal in accordance with the second PCC rules.