what you are supposed to do/what you should do/what you ought to do (It often means 'shall', eg shall/should I help you?) sollen to be supposed to, ought, should what you may do/what you are ...

ihr sollt you are supposed to, ought to, should (plural, informal) Sie sollen you are supposed to, ought to, should (singular or plural, formal) sie sollen they are supposed to, ought to, should ...