Want to create secondary menu like this

Hi there,

That would be easier using the top bar widget area:
https://docs.generatepress.com/article/top-bar-widget-area/

By default the first widget would be on the left and the second widget would be on the right.

To combine both menus on mobile, the easiest way would be to create a new menu to include both menu items, then use the slideout navigation:
https://docs.generatepress.com/article/activating-slide-out-navigation/

Let me know if this helps :)

Perfect the top bar works for me.
Here is the screenshot: https://prnt.sc/ligtad

And i have adjust all item on slideout menu but how i can disable top bar on just mobile and tab because i have adjust all items on slideout menu.

http://prntscr.com/ligtb9

Try this CSS:

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }
}

Thanks solved

No problem :)