'gallery banner' to change a new link

Hello,

I have a "gallery banner" on my home page which displays in a visual ways some of the access to menu (not all of them).

I recently changed the destination of one of the banners to a page (that I just 'turned off' and put in Offline mode). I want to reconnect it to the old usual page but I don't remember how to do it.

When I click on the 'gallery banner' I just can edit the visual size of it and nothing else? where are the link areas?

www.veneziahub.com (decadenza carnival)

Thanks