I need to divide this line but i want there to be 1/4" spacing between the divided segments, is there a way or extension that does that?
No extension that I’m aware of. You could draw a shorter edge segment and then use Move/Copy to make a linear array with the spacing. What are these edges for?
we get panels sent to us in sheets but trying to see what size to make the panels with the least amount of leftover material. but the spacing in-between them need to be 1/4". just seeing if there was an easier way to do it without trying out each size until I get a correct measurement.
Can you start from the center of the space? If so, you could do two divided lines, I think.
If I’m correct in thinking that you are trying to see how many panels it will take to finish the space then, I usually approach this in 2 ways:
1st- draw a rectangle to the size of the panel I’m using, ie 4’x8’, then offset it by 1/8", group or make a component, and copy and paste… [Doing this on a new Tag will help you isolate and delete them later on]
2nd- Use the tapeline tool to make a grid of the panel size + 1/4"; ie 48.25" x 96.25". Position it and have a look.
I hope that helps. (if I’m wrong…oh well 
)
It would help if you can post the model or, at least, the total length of your line and the size of the panels that you intend to use.
Do you also need to space the panels in the direction that is perpendicular to your line?
Finally, are the panels oriented with their width along the line? I think that is what you want.