Can I upload a list of attendees to my meeting?

No, it is not possible to upload a list of attendees.

Another option is to ➡️ Create a Troop

A Troop is a convenient way to save a list of attendees' details for future meetings. When you create a Troop for the first time, you will need to manually add the attendees' origins. However, once you have set it up, it becomes effortless to use.