Confusing synopsis for debusine-admin group members

The synposis for debusine-admin group members is:

usage: debusine-admin group members [-h] [--yaml] [--add user [user ...] | --remove user [user ...] | --set [user ...]] scope/name

It seems like --add consumes multiple arguments and as a result, the group name cannot be passed last as is suggested here. It only works if you pass the group name before --add.

I suggest changing the synposis or making --add consume a single user only such that it needs to be repeated if passing multiple users.