QWERTY bluetooth external keyboard(s) question

Hi everyone,
after a first search I didn’t find what I’m after at the moment: I have two bluetooth external qwerty keyboards but I have to do some different shortcut for using it with Dorico; as an example Option is needed in fingering popover before hitting arrows and other stuff like this but one thing I still haven’t understood: how to move caret in non pitched percussion five lines staff? keyboard arrows don’t run as expected and I have to use ones in the upper left part of the write window; copying/pasting was difficult as well: if I select a bar, copy it with the copy button I can’t paste it correctly (I’m in write mde, of course).
Are these known problems or it could be depend on my specific keyboard models (Logitech Slim Folio, no touchpad, and TuneIt, with touchpad) ?
Thank you very much,
Art