No empty pads GA SE4

After years of absence from DAWs etc I installed Elements 9. I realise that I have to learn the new Groove Agent since my ancient intuitive GA won’t work.
A probably simple basic question: The manual (page 9) tells me to click on an empty pattern pad. All 16 are just patterns and the buttons 1-8 above are black.
There are empty patterns on the Instrument page but that doesn’t help i guess.
Maybe I am blind, but please enlighten me!
p-o

Right click any pad and click either Reset Pad or Remove Patterns to make it empty.

…and it is possible to use the original groove Agent with Elements 9, I have it working just fine.