I am volunteering in the task of documenting and making recommendations for a non-profit SalesForce setup. Many hands worked on the setup and changes of SalesForce without documenting their decisions. So, I'm a little bit in the dark. In Accounts, there is this field in the Grantmaking section called Funding Focus. Is that a default field for a non-profit starter version?
In the Contact custom field list in Setup, look in the Installed Package column for the field to see if it's in a Nonprofit Success Pack (NPSP) package.
FYI, your best resource for NPSP support is the Salesforce Foundation's Power of Us Hub here: https://powerofus.force.com
You can login with your Salesforce ID and gain access to Chatter groups covering many aspects of the NPSP. Foundation staff, consultants and non-profit organizations are all participants in the groups.