MaxButton on front page (between title and “search-function”

Dear Community,
I want to put a button (with a direct link to newsletter subscription) on the front page – ideally between main title (left side) and the “search function” (right side). I have installed the plugin MaxButton, created the button but now I don’t know, who to add the shortcut to the right position. Unfortunately I am not a web programmer, so I do hope there is an easy way. But maybe MaxButton doesn’t work with Catch Responsive? If not, are there any alternatives to add very easily a button for this function on the needed position? Thanks in advance for your help. Cheers, Anita

The page I need help with: [log in to see the link]