Multiple form submissions sorted by user
It sounds like you are doing two different searches:

A. Get all webforms for which a user is the author

B. Get all users

Basically, Views has trouble with this kind of thing, because Views generally deals with one type of entity at a time, and users and webforms are different types of entities.

You can use Views Field View module to put one view inside the other.

Rough outline:


Create a view showing all the forms for a given user (filter for the user using a Contextual filter on the UID)
Create another view showing all users.  Use Views Field View to embed the view created in 1 and supply the UID as the argument.


This view will probably be very slow/performance intensive but since this is mainly for admin purposes hopefully that's ok.

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