Sublessee will not, without Sublessor’s (and if the Master Lease so requires, Lessor’s) prior written consent (to be granted or withheld in Sublessor’s sole and absolute discretion) in each instance, by operation of law or otherwise, assign, mortgage or encumber this Sublease or sublease all or any part of the Sublease Premises, or permit the Sublease Premises or any part thereof to be used or occupied by others.