Programming a Momentary Switch?

I’m trying to program my MC6 PRO with a Strymon Volante with independent switches set for the hold and oscillate functions that will activate when pressed, stay activated while held, and deactivate when released but I’m struggling to get it to work. It seems like it should be easy but I’m breaking my brain on it.

What am I missing? Thank you for any help!

Should be something like:

msg1: position = both; action = press; send your ‘engage’ command

msg2: position = both; action = release; send your ‘disengage’ command