The CMS allows you to change a unit's priority to get it more attention.
A High Priority will make sure the unit shows up toward the top of the default search results. (of course, it still needs to meet the requirements of the user's search.)
A unit with a priority of "Very High" does the same thing as just high priority but it will also add the property to a "Featured Property " block on the website.
On the list of rentals page, you can filter the units by priority or sort the list by priority.
Here's how to change the priority:
Edit the unit, then select the priority from the dropdown shown here:
These can also be edited in bulk by selecting the top right button for "Editing Basic Data Button as shown here: