Hi there,
1) a) High the GP mobile menu b) Move the MMM menu to the right side?
Do you mean hide the GP mobile menu?
If so, try this CSS:
#mobile-header button.menu-toggle {
display: none;
}
#mobile-header div#mega-menu-wrap-primary {
order: 3;
}
2) The sticky mega menu is not using GP’s sticky option, it has its own JS and CSS, so GP has no control over it.
You can try disable the mega menu sticky option, then add this CSS to fix the entire site header at the top of the screen:
header#masthead {
position: fixed;
top: 0;
width: 100%;
z-index: 999;
}