OK everyone, so I have figured it out. So to connect to another node, meaning a repeater system that has a node that you can connect to, these are the instructions that I were told.
Let’s say, for example, you want to connect to a node, node number, 1234. To connect your node to the other one, you would enter, *3 1234. Then, after you are done, talking on that system, to disconnect from that node, you enter *1 1234. Not sure if that applies for all the nodes, but for the one I’m getting, that’s how you do it.