search button for Customizr

Hi
is there a option to add a functional search button in the Customizr theme? Have tried searching but can only find how to add a search button to WordPress and it looks a bit complicated for my level of competence. Also since I am talking about search buttons can someone tell me if I can search within the support blog of a plugin or theme, I can only see where I can search the entire WordPress database, not the actual plugin or theme. Like I would like to do a search in this blog for Customizr for “search button” any help appreciated.
Cheers
Ray