Full screen gallery with logo in the middle

Hello, I’ve got the plug in and works fine,

Just want to know two things is it possible to have a logo in the middle of the page and the gallery around it

and, for the gallery to take up the whole screen rather than the confinds of the page or at least with left and right arrow or does that come with adding more images?

https://www.ads-software.com/plugins/tiled-gallery-carousel-without-jetpack/