A baseline grid can be your best friend when creating documents that require a clean, structured look. Far from constraining your design possibilities, baseline grids are liberating, taking the hassle out of trying to figure out where to put things relative to other elements on your page. InDesign’s implementation of baseline grids is elegant and efficient.
In your grid preferences, choose the baseline grid increment—the same as the leading of your body text—and whether to begin the grid relative to the top of your page or your top margin. Specifying an offset amount means that the grid starts where you need it to and that you don’t clutter up your page with unnecessary grid rulings.
Setting Up Baseline Grid – Video
Custom Baseline Grid – Video