1. Go to 'Administration>Drop Down Lists' and select 'Unit Preference'.

2. Click 'New Preference' write a 'Name', check 'Mandatory' in case only rooms with this attribute should be displayed in search result (if not checked it will display rooms with the preference first, and then all other rooms). 

Check 'Public' if the preference should appear as a search criteria in online part. If you make a preference 'Public' we recommend to have it 'Mandatory' also. 

Click 'Save' to save changes.

3. Go to 'Units & Rates>Units' and enter the Unit where you want to add the preference.

4. In 'Preferences' dropdown select the preference you want to apply to the unit. 'Save' in top right corner.

5. In booking wizard when you make a new reservation, you are able to filter on preferences in step 2, by selecting a preference in the 'Preferences' dropdown.