Create guide presets in layout

[ColtonPercy]

When creating guides on the layout, there should be an option to preset and select preset guides. This would funtion similar to setting custom scales.

 With the current method, I constantly have to remove and re-add the guides as I am working, setting a new interval every time.

 If it were set up like the scale options, I could select page units and define custom guides I use frequently. 

[AlfredBaldenweck]

Agreed. I always use 1/4 inch margins and it'd be cool if not only could set favorites, but also default to one of them.