The charity quilts I have made, I have alway made from start to finish. I have done that many in recent years. I will be making more with the COVID-19 is not an issue where I am making so many mask. Once out quilt guild gets to be back and running.
I would hope that you can put down a few ground rules. Many good suggestions have been given that should help you to establish those ground rules. Don't let others take the joy out of the good work you are doing.