Create Mass Additions Clearing Accounts

Summary

How to register the clearing accounts I want to use as asset accounts?

Content

Currently, I run Create Mass Additions from invoice distributions in Payables once per week. It works for some clearing accounts but not for all the clearing accounts that I need to pull from. Our system was set-up prior to my employment at the university and all humans who were involved in the set-up have now left the university so I do not know how to add clearing accounts to the Create Mass Additions process. I read something about "Segment Values" on a blog but I have no idea where to go to access this.