Use this Solution if you have a Vacant Untenantable Room that you need to make Vacant Tenantable.
From the Home Screen, click Properties, then Manage Properties, then double click on the row of the Property you want to change the Room Status for. Double click on the Room you want to change the status for, and the Room Details pop-up will appear:
Enter the date the Room will be available to have a Tenancy again in the Until field:
The Room is now restored back to Vacant Tenantable and is able to have a Tenancy.