Hmm ... may be i explain my scenario:

My boss has delegate the calendar right to his secretary . One day secretary
help her boss to book one appointment and meeting room as resources.

Then if the boss want to change the appointment time himself. He will unable
to do so . (Logically , this appointment was create in my boss calendar . Why
he can't change it own calendar appointment ? )

As per workaround solution suggest is to give editor rights in resourse
meeting room . But if we give default rights as editor in resources , users
can change other users appointment which may lead more issues.

Please correct me if my understanding is wrong.