Edits such as Loan Type, Occupancy Type, Property Type, Notes, and Expiration Date can be made by clicking the 3 dots in the upper right corner of the Loan Parameters panel and selecting Update Parameters.
Any of those fields from the Loan Parameters that flow directly through to the PQF and LSU automatically update when you change the loan parameters. The LSU uses the numbers from the accepted PQF (they will only change if a LO changes the accepted PQF/offer).
For edits not discussed in this article please see the following articles:
LSU purchase price is wrong, how do I update it?
How do I update the property address for an LSU?