I'm trying to add an alternative host to a meeting; It will not accept his name or email address.

Employee

Is the user that you are trying to designate as the alt-host:

They must be both in order to assign them as alt-host.

Newcomer

How can I make him a member of my account? He has his own zoom account but I use my account to set up zoom meetings for him and his client.

Employee

This article can show you how to add him to your exisitng account: https://support.zoom.us/hc/en-us/articles/360028938451-Adding-existing-users-to-a-paid-account

Once he's added, then you will need to purchase a 2nd license and assign it to him. With that done, you can then finally add him as an alternative host.

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