If you want to control a garage door with a relay using the standard alarm panel this is how you wire it.
You’ll need a 24v power supply, power converter, and 5v relays.
https://www.amazon.com/gp/aw/d/B01M03288J?psc=1&ref=ppx_pop_mob_b_asin_title
https://www.amazon.com/gp/aw/d/B07M88JRFY?psc=1&ref=ppx_pop_mob_b_asin_title