Module position "mainmenu" not available?

I am trying to use a mega menu module (http://demos.joomseller.com/#jse-k2-mega-menu) and would like to replace the existing one with this one.

Looking at the template demo module position one can see that there is a postition called "mainmenu". So my question is where I should position my mega menu module for this?

Hope to hear from you soon

Hi again,
not all module positions are normal.
so if you want to add new module instead old menu, you have to add new module position. near old location.
check footer link for guides how to...

Thanks I found it (http://www.gavick.com/documentation/joo ... -position/).

However, if I do this ... will it be harder for me to update this template in the future? Comments on this please

Hi again,
not all module positions are normal.
so if you want to add new module instead old menu, you have to add new module position. near old location.
check footer link for guides how to...

I'm not so sure... you have to think only about one file, probably which won't be changed soon.
All updates are in css mostly. You have to remember that's all - this is normal when you need advanced customizations.

and using override.css to CSS changes.