Sometimes it's difficult to display the drop-down percussion map list in the endpoint configuration

I’m at last getting to grips with percussion maps. Earlier attempts failed because though I managed to create a percussion map it didn’t seem to appear in the endpoint display. Expression maps always show the word “default” but the percussion map box is blank until you click on it and even then the drop-down choice doesn’t always display (at least it doesn’t always in my case). It may be the way my screen displays the percussion map column but triggering the drop-down list doesn’t seem quite as easy as it does for expression maps. For this reason I am only now getting to grips with percussion maps. Better late than never I’m sure you’ll say!