rectifying list of members

Glenn Glazer
 

For one of my groups, being a member of the group requires being an elected member of an organization. Over time, people come and go as might be expected.

So, I have the group and I have a spreadsheet with the list of email addresses. Is there an easy way to rectify the group membership against the list (remove those not on the list, invite those not in the group that are on the list)?

Thanks,

Glenn

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