In the chapter of tenancy contract consider three parties as stated below.

First Party - Building Owner
Second Party - My Company
Third party - Myself

*Tenancy contract is available between 1st & 2nd party only.
*I need to know whether an authorization letter from 1st party stating that the 2nd party is allowed to sub-lease the property is compulsary or not.
*And also need to know whether these documents needed Municipality (Baladiya) stamping by paying 1% of the annual rent or not.

Kindly clarify.