Main menu modification

Hi to all, i need some small modifiction on main menu.

So by default we have main menu for example we can see 6 menu links and than we have lang more menu button, change lang menu, and search button.

Please check attachet pic:

More menu looks like:

And when something selected from more menu we can see next things:

So on the latest pics we can see that one menu link was added to main menu and we have now main menu +1 menu from more menu.

What i need and why. I am modifed main menu and use now fixed size of all links, also have for example 6 items on menu and if i will choose something from more menu I will have 6 items +1 and my design will be broken.

I wanted to ask some modifictions, main MUST have always 1 pleace in menu activated and there shold me a menu ( first link ) from more menu.

Hard to expaline it, but by default when we enter to site menu must look like on latest pic, with 1 additional link from more menu in that case I will always have fixed numbers of menu links and when something new will be selected from more menu - it will be on latest place like now we have "chat" placed.

I hope you understand now.