Is it possible to select and edit multiple form fields to assign them to someone?

[Lori34595589dwoo]

I'm using forms prepared by a different organization to set up contracts. There are a few different types that we routinely use, some are one page, but another is 8-10 pages. 
I fill out a lot of the information, then send to other institutions for signatures.

I cannot figure out an easy way to select multiple fields and either freeze them or assign them to myself as prefill fields.

Looking for suggestions