Especially if your playwriting credits are still a little sparse, you'll want to include some of your more notable stage experiences as it will also let the reader know your level of immersion in the business.
I note my experiences like that near the bottom in a spot I call "Extras".
That portion used to be larger, but as my playwriting credits grew items in "Extras" were dropped. It's still a category, but it only takes 3 lines now. It still serves to let readers know that I do a lot in theater as a producer and director.
I've written bios and resumes as an actor and director, but never as a playwright. Do I follow the same format? Should I include any other theatrical information such as my acting and directing gigs since I'm so new to the PWing world? Any suggestions, examples and the like would be greatly appreciated.