Extract multiple users data from excel in RITM using Flow Designer and pass it to Azure AD

[02rahul02]

I am working on a requirement to Add/Remove users to Shared Mailbox in Azure AD from Servicenow using Flow Designer. I have used the Microsoft Azure AD Spoke for this.

I have a requirement to add/remove multiple users so for this I have created an attachment variable in the catalog item as I am accessing the same catalog item through VA as well which does not support List Collector variables. Now, if a user adds list of users through an excel in the RITM, how can I extract this data in the Flow Designer to pass the users details to add/remove in Azure AD?
Hope I have explained the requirement correctly.