Adding secondary host to current ongoing meeting

Hi, 

I'm new at Hosting Zoom meetings. I Host a weekly meeting that runs the same day and time each week.

This upcoming week I will be away and will be unable to Host the meeting. I would like to add a person to host the meeting for me.

How do I add a secondary Host onto the already established current, ongoing, weekly meetings?

Thank you for your time! It's much appreciated.