Cell balancing with DESS enabled - how does it work?

The VRM portal has the following message:

How does it work, the cell balancing? When will this happen? When is this triggered? Do I need to do something or is this done automatically. DESS is enabled so the system is continue loading and unloading, is there time for cell balancing? Should I change the config to for example charge only and give the two JKBMS (V15) batteries the chance to balance the cells? Looking for suggestions, thanks.