If this feature is turned on, SalonTouch will suggest the bed with the least amount of time used on it for the bed type.  This will try to keep the lamp life even on your rooms. In Pearl this is indicated by a yellow Star on the activity screen.  In Evolution the room number will turn blue.

 

For example, if you have three Level 3 beds and one has 100 hours used, another has 150 hours used, and the third has 200 hours used. The room number for that bed will turn blue so you can suggest it to clients.  It will highlight the room number for the bed with 100 hours used in blue so you can use it.