Sometimes when you have generated a tenancy agreement, you have to allow for human error. Propoly has given you the function of being able to unlock a deal. This can be used to modify a tenancy agreement or the deal itself.
By clicking the unlock button it will then prompt you to confirm you are happy to unlock the deal.
By confirming this is what you want to do, it will then allow you to go back and edit any part of the agreement that is needed.
Remember, you can unlock any deal up until both parties have signed the agreement. Once both parties have signed, there is no going back as the agreement becomes legally binding.