View to margin (safety area)

I would approach this differently from Eugene. (I have a clinet for whome I do banners on occasion)

I add a slug for hems and such amd you can do the same for your safety area. Preview without the slug, export with.

Is this just to view it at full page without seeing 'rivet' area? 

It's best to have all your elements on the 1 page with proper margin setup and bleed areas. 

Technically bleed areas will be trimmed off - so you don't want any artwork (including backgrounds) to be trimmed away. 

You can make another file the page size you want with 0 margins

Then save that.

In the banner file you can you use FIle>Place and place the indesign file on top of the banner. 

You can then treat the linked file like any other, you can edit it and update it as usual.

It's just linking the InDesign file to the layout.