Easel and 1F Touch Probe

I am using Easel Pro, and have been having issues with 2-stage carves. I can see a difference in depth between my roughing pass and detail pass and I’m wondering if this is an issue when probing for Z on the detail pass.

Is it necessary to follow these instructions for setting up a third party probe when using Easel? It says A machine must be connected to Easel in order to make changes to the Z-Probe settings. How do I “connect my machine” to Easel?