Is it possible to add a new value for the field FIELDNAME on the PC_SEL_CRITERIA3 page?

Hi, we are on PS 9.2.35, PT 8.58. We have a request to enhance the PC_SEL_CRITERIA3 page to allow entry of a range of GL accounts as an additional filter criteria for the delivered manual capitalization process. So, in addition to being able to exclude by ACCOUNT and other fields in the image below, we can exclude a user-specified range of accounts. As part of this customization, we'd like to add a new value, ACCOUNT_RANGE, to the below look up.

I've done some research in App Designer and it looks like these values come from this table: PSRECFIELDDB, which is similar to PSRECFIELD. My question is, is it possible to add a new value and if so how?