I have created a simple ArcGIS Experience Builder app that has a table widget and the edit widget
The user can search for their name in the table and then use the edit widget to update a value.
It is working as I had hoped, However, It appears that the ObjectID is displayed in the upper left. Can I change this label or hide it? I don't see that setting anywhere that can be changed.
The label is read from the display field of the service. You'll need to configure the service for the label displayed.