How to Prototype an inner picture to another artboard?

[wyatt31429695ibxt]

I am a graphic designer and I know a decent amount of UI/UX design, but I can’t for the life of me remember how to have an image on one artboard link to the other artboard that makes the other artboard FULL screen. for whatever reason mine just shows the entire linked artboard as one big piece when I need it to be a scroll through like the other web pages.

What is shown is the drop down menu that I want our clients to use and be able to specifically go through out client list to see what we have done for them, and once they click on said client another window comes up (none of these are finished pages) with a in depth detail look of ONE client. in other words if someone wants to see Bayer our clients booth we made for them, they click the picture and the second screenshot shows what is supposed to be another 1920px artboard that will show process and finished, but I don’t know why it won’t use the full screen as the others do.
I’d really appreciate the help since I don’t know xd as much as I do like the other programs.

[wyatt31429695ibxt]

Note i foud the issue and it was the artboard itself, for what ever reason the artboard didnt wann view in full screen cuz it was a custom made one, but once I hit WEB 1920x1080 and licked said Bayer to it I could then view it in full