On-prem domain migration *directly* to Azure AD?

However, here are the things that I am still unsure about:

1) Since I am planning on creating and using a Microsoft "Provisioning Package" with your "User Profile Wiz" utility, am I going to be able to use your utility only one time (per computer), to migrate the user profile from our onsite domain, to Azure AD?  Or instead, am I going to have to use your "User Profile Wiz" utility *twice* (once to migrate the user profile from the on-prem domain to a Workgroup, and then use your utility again to migrate the same user profile from that Workgroup to Azure AD?

2) If there is only one user profile to migrate in this manner on a given computer, I do *not* need to create and use a "User Lookup File" with your utility.....is that correct?

3) On computers that have *multiple* user profiles to migrate in this manner, then I'll need to create and use a "User Lookup file" with your utility.....is that correct?  Assuming so, then can you provide any additional details on the formatting for that "User Lookup File?"  For example, is it one user listed per line?  Or perhaps instead, multiple users in the "User Lookup File" should be separated by a semi-colon (or some other character)?

Thank you in advance for your assistance here!