Flow Designer Approval List

Hi,

I've been reviewing what I can find in Community and KB and I'm not completely following if I can set up my approvals as I'd like to.  Here's my situation.

I'm creating a flow and as part of the flow, I created a lookup records action to get a list of the users I want to send approvals to.  I'd like to send out approvals to each person in the list and then if one either approves or rejects, act on this.  I see in the 'Ask for Approval' that you can set the rule for 'if any approve/reject', however, I don't see how to get the 'list' of users for the approvers.  The Ask for Approval seems to only send out one approval record.  How do I group these together?  Also, I'll have a few levels for approvals, so the first group would either approve/reject, and then if approved there will be a totally different groups for the next level of approvers.

Any information on how I would set this up in Flow Designer would be appreciated.

Thanks,

Karen