The appearance of the standard grids in OpenGround can be edited by using the Configuration Tools - Manage Model interface. From within this interface, select the required table and the Manage Grids button will become available.
When opening this dialogue, it will display the properties of the standard grid will be shown. Any fields that are not required can be moved from the Allocated column to the Available column, which will hide the column from users views when viewing the table.
Click on Save to commit any changes to the database.