Once you have found a tenant, you can remove your advertisement by clicking the button Mark as rented out. You find the button under Advertised rentables.
When you click Mark as rented out you will be asked to select your new tenant.
Search for the tenants name, press it and Select. If you did not find your new tenant click Skip selection.
You will now get the opportunity to send a rejection message to the property seekers.
The selected tenant will not receive the message.
When you press Yes, continue and then Yes, mark as rented out your advertisement is automatically removed from the search results on BoligPortal. You can still see the property under Rented out in Advertised rentables and All rentables.