Multiple Conditions/Operators in a Single Cell in Approval Spreadsheet

Summary:

How can I combine "NOT IN" and "NULL" in a single cell for AP Invoice Approval Spreadsheet?
Currently, I am creating 2 separate lines to accommodate them.

Content (please ensure you mask any confidential information):

All are the same except for the Project Type Name Conditions. This is where I wish I could combine them if possible.

Version (include the version you are using, if applicable):

25B (11.13.25.04.0)