But, do not put a hyphen after an adverb if it ends in 'ly', even though it is functioning as the first word in an adjectival compound. The 'ly' ending tells the reader that the adverb modifies the following word. The carefully planned and firmly conducted meeting achieved its purposes. Other marks report writers misuse or fail to use are the semicolon, colon, and dash. Those marks are important.
All punctuation marks are important.
They mean the difference between easy, rapid reading and tough, irksome reading. Another excellent and more extensive reference book is 'A Manual of Style', published by The University of Chicago Press. Eisenberg, Anne, 'Effective Technical Communication', McGraw-Hill Book Company, Inc., New York, 1982. Strunk, William, Jr., 'The Elements of Style', revised by E. B. White, The Macmillan Company, New York, 1959.