iDJ Pro - How do I bring Samples to the "push-buttons" ?

Can someone show me exatcly the ways how I can do that ?

Click on “Edit” and then on the music note icon in the top right corner of the sample button.

This isn’t supported at the moment.

Ah Ok. Sorry.

And how can I rename samples from f.e. “sample 1” to a name that I want to choose ?

Thanks 4 Your help.