How To Load Rigs From USB To Kemper

I have been saving many rigs and Till's free cabs on a flashdrive. Once I insert the flashdrive into the rack, how do I save them?

Also, is there a way to save Till's cabs under the cabinet menu?

You're help is always very much appreciated!!

Thank you for your help! I found it in the manual

When I import onto the Kemper, is there a way to pick and choose what I want on there or do I have to import everything in the shared folder? Also, I have Till's free cab pack. Will those import with my other rigs or can they be added with the other cabs?