Give the possibility to a problem creator or exercise creator to restrict the use of the problems he creates to other users.
That includes creation of groups of users that can see or upload to certain exercises excluding users that do not belong to that group.
Give the possibility to a problem creator or exercise creator to restrict the use of the problems he creates to other users.
That includes creation of groups of users that can see or upload to certain exercises excluding users that do not belong to that group.