Pickup Machines -- Footpedal control

Hi Folks,

I’m a little unclear from the manual C-1 on how to do what I want to do. Is “arming” the same thing as starting a pickup machine?

Is there a way to choose whether I want it to stop recording or to go into overdub mode once I’ve recorded my loop?

Once it’s playing, is there a way to choose whether it goes back into overdub or starts over from a MIDI pedal?

And has anyone heard from HQ whether there is a planned “undo” for pickup machines?

Thanks.

–JES