Here's a basic setup for using a metronome in a live scenario, as well as using the Xenyx 802 mixer for your monitor.
You can also send the click to the rest of the group using this setup.
0:00 Overview
0:38 Tama RhythmWatch metronome
0:58 Xenyx 802 mixer
1:10 502 vs 802
1:35 Assigning channels on the mixer
2:20 Sending the click to FOH (for other members to hear)
2:54 Using the 502 (for not needing to send click)
3:49 Using the "UNLATCHED" foot switch for metronome
4:30 "Balanced" instrument cable
4:52 Gear rundown
HUL 13in aluminum case: https://www.amazon.com/HUL-Aluminum-Customizable-Instruments-Accessories/dp/B07MQ7B5Y7
HOTONE Dual Footswitch Pedal: https://www.amazon.com/Hotone-Momentary-Footswitch-Controller-Switcher/dp/B08H1NQCGJ?th=1
Balanced path cable: https://www.sweetwater.com/store/detail/BP5--pro-co-bp-5-excellines-balanced-patch-cable-5-foot