How to Use Multiple User Credentials in Different Macros

I wondered if I was planning on using multiple usernames and passwords; that would then be used in various scenarios, however, I do not want to copy over the User Credentials each time.

For example, should I put the usernames and passwords in its Macro (User Credentials)?

Store | Current User (+1) (each time this runs)

User #1
User_Name
Pass

User #2
User_Name
Pass

Question - Can I then loop into another Macro and carry over the fields titled:

User_Name
Pass

Then loop back into the Macro called (User Credentials)

The simplest solution is to create a csv file with all the usernames and passwords and have the macro extrapolate the data necessary for login