I would like to show 'Manage User Spaces' and 'Manage Rule Spaces' in More Options menu only for admin user. Please, can anyone tell how to hide those options for end users??
Those actions are shown only for the users with role Coordinator and for Administrators. If this is not good enough there is always a possibility to write and register simple java class that will extend BaseActionEvaluator. There will be only one method in this class which will return true if current user is admin.
More details about different action configuration options can be found here