Hello,
To manage Rent and Buy requests from frontend You need create first menu - My houses, then go on frontend and login, go to menu My houses and you will see options to manage Rent and Buy requests.
You need add house and click on button Edit houses
You can manage requests for your own houses.
Follow attached image
If you would like any further information, please do not hesitate to contact us too.
Best Wishes,
Taras
OrdaSoft team