Need help on how make a distance for template from background sheet.
supposing You are talking about the red objects on Your background sheet
Use RMB and properties to enter the coordinates etc for the selected element (in this case itmight be lines)
Other method I have used very often is to put a circle on the background sheet, using above method to put it on 0,0 and give it a fixed geometry relation
Than You can use this circle for dimensioning the rest
As a starting point, add a circle to 0,0
Once you get everything where you want it, ground it and delete the circle.