adding a district leader

In my Visiting Teaching reports District 5 leader was removed. Upon research her name had been dropped from the eligible names list. She has since been added again. Now, I cannot get her name attached to district 5. I cannot find an edit function to do this. Each time I try something a new district 5 shows up. I am not very computer literate and need step by step directions to add her back as the district leader.
Thank you for your help.
Judith Gunn