Need to build a custom stroke in InDesign? Easy. Go to the flyout menu on the Stroke palette and choose "Stroke Styles..."
A dialog box will open with several options and a list of custom strokes. Choose "New..." to get the stroke editor. You can make dashed, dotted or lined patterns, change the length and pattern of the stroke and preview your designs at different weights.
The custom strokes are saved on a document level, but you can save your designs and load strokes into other documents. If you want a custom stroke to be added to all new documents by default, simply add the stroke with no documents open.