When creating tables, I'm having a terrible time trying to access the "Key Path" option from the Data inspector. The only options I do get are "Dictionaries from SQL," "Forms Filter," "Objects from Relationship," and "Objects from Script."

I've tried to see what I'm doing wrong by looking at existing print layouts and I notice that when I deleted the "Key Path" option, I can't get it back- only the four mentioned options are available.

Sure could use some help here. Thanks.