Monero Full-Node + XMRig/Gupax

My “Umbrel Home” runs as a Monero node (Intel N100) in Germany.
Now I would like to use my personal full Monero node for my mining (P2Pool minexmr2.com + XMRig) with another AMD PC.
Which entries and where are necessary?

Monero GUI wallet

=> Daemon startup parameters? Bootstrap address? Bootstrap port?
More?
Connect the node/remote node there to the Monero network at “third-party provider”.
Which inputs?

GUI Gupax (https://gupax.io)

There the inputs for 1.) XMRig and 2.) P2Pool
More?
Thank you in advance.