The theme can work for a single property. You can disable submit for other people and manage this property with an user of your own.
Steps to get you started:
1. You install a demo – http://help.wprentals.org/article/demo-setup-with-1-click-demo-import/
You delete all demo properties – owners – blog posts from admin (but this way you keep the pages and theme options and save time).
2. You go and register your own account (use front end – register (on meniu)
3. You add your properties with that account
If you added properties as admin you can edit them and assigned them to your new owner account.
Edit from Admin -Listings – Edit Listing – Owner responsible
4. You go in theme Options and add your username to be the sole owner
Install User Switching plugin to easily switch between admin and owner account from backend.
If you need further help please contact us through client support and we will guide you – http://support.wpestate.org/