Step one: Join the meeting as you usually would.
You’ll find yourself in a meeting. If you put the mouse cursor over the Zoom window the dark grey bar at the bottom of the screen with meeting controls will show.

Ask (by talking!) the host to make you a co-host.
Click the “Participants” button and the participants drawer will appear.

Participants is how you let people into the meeting. When someone joins you hopefully will hear a chime noise – sometimes this is turned off. You will also see them appear in a waiting room in the white part of the window:

When you move your mouse cursor over the waiting person’s name, a set of buttons appears:

Click Admit and they can come in!

When put move the mouse cursor over a participant name you will see things you can do with that person. The More button shows this menu:

Making someone a co-host allows them to also admit and remove people from the room, and share their screen. On Sundays we have been using a separate projector computer, and it is made a co-host so its screen can be shared.
If someone shows up in the meeting in order to make a nusiance of themselves (e.g. showing unsuitable things on their webcam), you can use this menu to Remove them.
When you’re ready to finish the meeting, click the End button in the grey bar at the bottom of the meeting window. Choose Leave Meeting if there are others staying on, or End Meeting for All if everyone is going.

That’s all folks! Congratulations on co-hosting a Zoom meeting for Wadestown Presbyterian Church!