Supawan, I’m not 100% sure I know what you’re asking?!?!?! [?] Do you mean, removing the Show Column functionality? ie: On the Sales Order Subform (Form 46), you don’t want to allow the user to select the Show Column by right clicking and selecting Show Column or by going to the View pull-down menu and selecting Show Column?!?!? In this instance, the only way would be to make the subform control on Sales Order form (Form 42), not ‘Focusable’. This may not be what you’re asking - sorry. [:)]