Go to your Servv dashboard and select the Event you want to add registrant.
(Related article: How To View, Update and Delete the Event?)

Go to Registrants field ->

Next, in the text fields "Name" and "Email" enter registrant's name and email you want to add :
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Then, press the Add registrant button to add them to the list.
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Click Save button to see the changes

Now, they have been added to the event as a registrant and will be treated the same as other registrants.

The registrant will receive an email notification with a zoom link as soon as you add them.