How do I change data in query results

I’ve entered data in several tables. I wrote a query to find the data that I want to modify. The query will not permit me to change any data though. I can change it in the tables just fine.

I figured it out. I had to get rid of the automatically created index keys which don’t do anything. Then set a field in each of tables as an index key and make sure they were included in the query results.