I have created a model and now wish to print.

I open sheet 1 and there is already a viewport created. Double-clicking on the viewport brings up the green outline. I cannot select the viewport. How do I remove this default viewport?

(I am okay with creating a drawing border, creating a new viewport, setting print configuration etc).

Thanks for the assistance  

Sorry - should have added that I'm using Draftsight Pro 2021​​​​​​​