Whenever you produce a play, not only do you have to pay royalties, but you have to give credit to the author(s). It's required by your performance license. Here's what you must do:
1. In any publicity you control (posters, program, ads, websites, etc.), list the name of the author(s) immediately after the title in a font size that is at least 50% of the size of the title. Nobody else's name may be larger. After all, the playwright is the creator and owner of the play.
2. On your posters and programs (including digital programs), include the following: "Produced by special arrangement with YouthPLAYS (www.youthplays.com)."
3. If you're streaming a play, please make sure that the title and author of the play are credited as part of the stream or in an accompanying digital program (or both). Please make sure the credit to YouthPLAYS noted above is similarly included.