I want to move the login button on Navigation

1. I want to move the Navigation login button on top bar (or other location), because I want to add another product category to that location.
(In OcenWP’s Demo version, it doesn’t seem like this item is, I don’t know why I added it or didn’t know where it was, when?: D)
2. If I can’t move, can I delete it?
Please guide me.
?Detailed image: https://www.mediafire.com/view/wnz3c031mcocvdn/fix_navi.jpg/file

Thank you!

The page I need help with: [log in to see the link]