You can delete railings from selected deck edges to provide access to the deck. If you want to remove all the railings on a deck, you need to select all of the decks edges first.
To remove railings from selected deck edges:
Click on the deck edge you want to remove railings from. A blue grab handle is displayed at the center of the selected deck edge. If you want to remove railings from other edges as well, use Shift+click to select the additional edges.
Right-click and select Properties, or select Edit > Modify Elements > Properties.
In the Decks dialog, select the Accessories tab.
Disable the Include railing on selected edges check box.
Click OK.
Note: If you add stairs to your deck, an opening will be automatically created in the railing.