Today I decide to have a new page for each gallery in the album. It will be more user friendly. In order to do this, I have to make sure Deactivate gallery Page link is disable (unchecked) in Gallery > Options > Gallery > Gallery Settings section. Then I need to add title, title description and preview image on each gallery. It will create a new page for this gallery by clicking Add page button. Page Link to will show the page that just newly create.