Although repertory, revue, extra work, fringe and others may be regarded as Pro-am Theatre, Pro-Am Community Theatre is part of that type of theatre which involves both paid professionals and unpaid amateurs with either having the chance of principle roles.
The difference between this and the other pro-am is that here there are no auditions as such, all the people who turn up can take part in the productions, at the discretion of the director or directors. Because of the lack of clearing with the numbers in these productions, they tend to lean towards huge productions, which can be a problem.