When adding a new shipping option to the service, the add new shipping details panel comes up, but all other panels in the screen are ENABLE. Just the shipping details panel should be ENABLE, all other must be DISABLE, include their menus and buttons.

Just set the panel's enabled property to true or false

Panel1.Enabled=true;

Disabling shouldn't be the right property.. I think you're looking for Visible. Just set the visibility property to false.

Panel1.Visible = False

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