Switch out of kodi (alt-tab) on tablet??

I know in Windows I can hit alt-tab and switch to other windows/tasks while in kodi. However, I am not trying to run this on a windows tablet. It works fine but I found I needed to go back to another window and could not figure out how to do the alt-tab function without a keyboard. Does anyone know any trick to doing this? My only option was to “back” out of kodi and quit.

Thanks!