If you want to hide a structure box in plan view, just follow the steps below.
Step 1: Navigate to the ‘Structures’ section of the Lineardraft toolbar
Step 2: Click the ‘Adjust’ button
Step 3: Click on the relevant structure in either 3D or plan view
You can also click on the corresponding structure box. Clicking on the structure will open the 'Edit Structure’ window.
Step 4: Click on the ‘Settings’ in the ‘Edit Structure’ window
This will open the ‘Settings’ window.
Step 5: Untick the ‘structure boxes’ you want to hide, then click 'Confirm'
Step 6: Click ‘Confirm’ in the 'Edit Structure' window