Hey ThomasMike,
Sure, be glad to help.
You need to use "momentary" switches, also known as "non-latching" switches. I used these soft-touch ones found here.
You can have 4 switches, 2 switches and a expression pedal, or 2 expression pedals at one time. You choose these settings in the Kemper's System menu on page 4.
Instead of drilling into your Midi Moose, you could make a 2 or 4 switch box using an enclosure . Here's a couple I made before I had the Moose...
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They connect to the Kemper with a 1/4" stereo (TRS) cord. So you need two stereo cables for 4 switches.
Very easy to wire, just connect the ground to the same lug on each of the switches, and one of the other lugs goes to the Tip and the other to the Ring.
You could run the two stereo cables and the midi cable zipped tied together to have a "snake", or I choose to wire everything using a VGA cable, since it has 15 leads...
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This plugs into a breakout box in the back of my lunchbox Kemper in the space where the power amp would go. The breakout has two right angle TRS cables, a right angle midi cable, and power for the Moose and it's now courtesy 9V outlet. These stay plugged in all the time, I just need to plug the VGA cable in and it's ready to go.
I've been using the switches for a solo Boost in the effects section, and a rotary speaker, both "Locked" so they behave the same in all presets (love that Lock feature!)
I also play in a trio with another guitarist and drummer, and then I lock one of the switches to transpose down an octave in the Stomp section, and have a very usable bass guitar tone. People love it when I go from playing bass lines to a screaming lead with a toe tap...thanks Kemper!!!