How to update flex fields in document of record

Summary:

We currently have several document of record types that generate flex fields that have lists attached to it. I am unsure where to update those lists within set up and maintenance.

Content (please ensure you mask any confidential information):

This is a screenprint of the DoR screen. When we select the "administered by" field, the below list populates (the black boxes are names). This administered by field is what needs to be editeded.

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

24 B

Code Snippet (add any code snippets that support your topic, if applicable):