Rules contains some columns two realize the following requirements:
On Day "MON" (this comes from the table "Days" with one columns) at 08:00 AM send a message to the phone_number of "planday_user" (this comes from table "planday_usernames" with 3 columns)
within my Application the automatically generated ComboBox will now show the ID (first) column of the table "planday_users". However I want to show the "fullName" column.
If you're referring to a field in an app (a data cell formatted to a rowlink and picklist of a table), and you wish for the "FullName" column to be the value to display / users to select, you will want to move that column to be the first column of that table. For a best practice, generally the first column of a table should be the column that helps users uniquely identify the row.
Hope this helps, and let us know if you have any other questions around this.
In the app, a field formatted to a rowlink and picklist will display the value of the first column of the specified table. This means that you'll want to move the column you wish to display in the picklist to be the first column. As noted in my previous reply, as a best practice, the first column should be the unique identifier value (the value that allows users to easily distinguish the row they are selecting).
Hope that helps clarify! Let us know if you have any other questions.