To change the appearance of the page, edit the styles of the corresponding elements (in most cases by using the "Main Frame" Style Zone).  
 
To change the menu’s links: edit, copy-paste, or delete the Link Elements within. 
 
To hide an element without deleting it, use its property Visible.
"Prove you aren't a robot"
- me, who is certainly not a robot
To "activate" displaying of an arrow, use its property "Visible"