Our company currently uses Forms to submit and approve Purchase Orders/Requisitions. Out internal purchasing rules limits the submitter to a single vendor (multiple items using a collection) and manager and/or senior manager for approval. 

Is it possible to build a single form that would allow a user to submit one purchasing form with multiple vendors with multiple items per vendor to different managers?

For example:

Vendor A

• one or more items for vendor A
• Manager A approval
   

Vendor B

• one or more items for vendor B
• Manager B approval

+ Add (add as many vendors and managers as needed)  

On submission, use a Workflow's Invoke Business Process to gather each Vendor iteration and send a forms link to the manager specified for approval.

If I could have a table with repeating rows within a repeating collection, I could make this work. I know this is currently not an available feature. I can't seem to come up with a plan to accomplish what I want using the tools available in Forms.

At the end of the day, having the user submit multiple forms as we do now is not a show stopper but if anyone has any thoughts on how to accomplish please let me know.