Which API or webhook do I use to identify clients and track client attendance?

I currently have weekly Zoom meetings with a number of clients. I send them a link for the meeting, and they login to the meeting using that link. I then take attendance manually.

I would like to track attendance automatically. I am thinking that in order to do this, I should provide each client a custom URL to the meeting, which I can associate on my end with their name and other information. Otherwise I’m not sure how I would know who joins the meeting, since not all people joining the meeting use their real names in for the Zoom app.

How would I get started creating a custom URL for each my clients, or otherwise identifying them when they login, and then getting a record of who attended the weekly meeting? Which APIs or webhooks should I look into?