Specify viewport position (/dimensions) in model space

Hi

I'm evaluation a transition from DoubleDad to Draftsight in order to avoid M\\\$Soft (currently running V1R5.2 on Debian wheezy). I have so far failed miserably at figuring out how to handle viewports correctly. Whenever i create a new sheet it creates a viewport with my entire drawing from model space inside it. Some of my drawings are fairly large, and having the entire drawing on one sheet of paper therefore does not make sense (would require something like A0 sized paper). I'd like to have a number of sheets, each with a part  of the drawing put on them. (Actually , in some of the drawings imported from doublecad the Doublecad viewports/sheets are ok, others are way off). I have so far failed to achieve this, pls advise

 

thans in advance

Karsten.