We have a series of groups that initially are going to be used for subscribing t

We have a series of groups that initially are going to be used for subscribing to tempo feeds.
These groups are of type restricted.
Is there a way to allow a user, via process, to self subscribe (join) to these groups and then get a response back from the group admins as to whether they are accepted or rejected?
I have looked at the Join Group Smart Service, but this only appears to work for Open groups....

OriginalPostID-92316

OriginalPostID-92316