I want to move the mainnav to the header section in the socialize template. So I need to remove the current header section and replace it with the main nav. Also, need to display the logo in the main nav which would be a sticky menu.
You should play with Socialize template module position for this, look at this file templates/socialize/tmpl/default.php you can move or delete the block position there, for more detail you can check the files inside blocks/ folder.
I cant help further with this issue, since beyond our support.. I suggest you hire the 3rd party developer for this.
Although, since this would be a core hack... a) Is the socialize template being updated with the new Jomsocial? b) When is the new stable version of Jomsocial (and if there is a new version of socialize) being released?
I would like to modify the new release rather than the old one!
a. no, because that is different package
b. since this is different product, socialize and jomsocial will be released in different time, wont released together except we have the same schedule for that :)