An Indesign Script to create Columns and Rows depending on a Baseline Grid.
There are two places you can install scripts in InDesign: The application folder and the user script folder. The easiest way to find these folders is to open the Scripts panel in InDesign (Window > Automation > Scripts in CS3 and CS4; or Window > Utilities > Scripts in CS5 or later), then right-click on either Application or User. We tend to use “User” for scripts that we’ve downloaded, but it’s up to you and the permissions you have on your computer. From the context menu, choose Reveal in Finder (or Reveal in Windows Explorer).
This window should appear:
After clicking the "OK" bottom, select your bottom margin.
A new Document will open.