Trying to organise a social evening for our drama group, I innocently thought that the membership were the type of people who would jump at any chance to get up on stage and perform, so advertised an 'open mic' evening, open to music, drama, poetry, comedy, or anything else they might want to do.
So far I have had precisely nobody who is prepared to get up[ on stage and do their 'party piece'.
Why do people who don't want to perform join a drama group???
If they don't have much history of social activities, it might be a bit novel and require an element of arm twisting first time round. Try asking around for who is likely to have party pieces then approach them directly. If it works, it will be much easier next time.
Not so surprising. You could easily get a similar response from band/orchestra members. Many in this situation like to be part of the group doing something together and would run a mile at the idea of doing something solo.
But these are mostly people who happily take on significant roles in productions, often on stage alone, and I made it perfectly clear in the publicity that doing things in groups was fine! Grrrrrrrrr!!!!!
I think the problem is actually that they want someone to tell them what they have to do. Asking them what hey want to do seems to have been the stumbling block.