How to change the open trigger for subpages?

To change the open trigger for Subpages the following steps :

Step 1: Select "Settings" on the left panel.
Step 2: Click on the "General" tab
Step 3: Turn the "Expand Subpages to the side " selector on. 
Step 4: Choose the Hover on Click trigger

When the subpages are opened underneath parent pages the subpages will be opened only by Click trigger.

Also, the subpages will be opened by Click on the next menu types:

• One By One

• Fade-in-Horizontal

• Fade-in-Vertical

• Zoom-in-Horizontal

• Zoom-in-Vertical