Single registration for multiple meetings

You could use APIs to create a combined registration form for all those dates to allow folks to register in one go. If you are not a developer there is a Zoom app, Salepager, that lets you create a combined registration form for multiple Zoom meetings without a set pattern of recurrence.

Are the meetings part of a series (i.e., does attending one require attending the others for continuity), or are they standalone events where people could attend any or all?

You can schedule a recurring meeting after logging in on the Web (you cannot do it from the app for reasons that escape us) and setting the recurrence to "no fixed time".

The login details will remain the same