I am having a problem dimensioning the drawing.
as you see on attached picture, the dimension is covering the line I want to use to catch.
How to change the settings to avoid similar problems ?
I can't tell exactly what problem you're having. Maybe that's why no feedback yet.
...the dimension is covering the line I want to use to catch.
I agree with @bshand. Let me make a guess here. If any part of a dimension is covering an object you want to dimension, you can try using the blue handles on the dimension to drag them away to uncover those sections. Ditto for the text of a dimension.
To apply these to all dimensions, settings can be changed from the Modify Dimension Dialog. All numbers are in terms of the text size:
Would you please tell me how to get the Dimension Style settings ?
My problem is different, maybe I didn't explain it perfectly, during dimensioning I cannot see the lines below the arrow, I am working with very detailed parts and when I am zooming the drawing to put dimensions the size of the arrow and the value is covering the lines.
I think the arrows with the dim value should zoom in/out together with the operator.
here is my issue :
The Dimension Style Settings can be accessed from the View tab.
The Styles command opens a dialog where 'Dimension' should be picked from the 'Style Type' list and then pick the Style from the list below it, Finally click the 'Modify..' button to bring up the Modify dialog.