Changing the link "behind" the banner

Good Evening,

I opened my forum awhile back but only started working on it recently, so I made a banner which is clickable (think it's default) which directs you to the forums.
I would like the link to direct me to the Portal instead as a form of HOME button, as Forum is allready on the navbar.

I believe I looked at all the settings and tried multiple things but nothing so far, I also searched these forum if someone else asked before.
Same with the F.A.Q. I didn't found what I was looking for.

I believe it would be fairly easy to solve but I might be looking at the wrong direction.

Thanks in advance,

P.S. If people don't get what I mean go to my forums here and click the banner, I want that to go to the Portal instead.

Friendly bump.