To configure a master page grid, display a master page and then choose Page > Master Guides & Grid. The Master Guides & Grid dialog box displays.

Use the Master Guides & Grid dialog box to control master page grids.

• Under Margin Guides, use the Top, Bottom, Left, and Right fields to specify margin placement relative to the top, bottom, left, and right edges of the page. To synchronize the values in the Top and Bottom or Left and Right fields, click the chain icon next to the fields.
• Under Column Guides, enter a value in the Columns field to specify the number of columns on the master page. Enter a value in the Gutter Width field to define the space between columns.
• The Content Dimensions field displays the area inside the margin guides.
• To control the placement and spacing of the grid, use the controls in the Text Settings tab. For more information, see “Design grids: Text Settings tab.”
• To control the display of the grid, use the controls in the Display Settings tab. For more information, see “Design grids: Display Settings tab.”
• To preview changes as you make them, check Preview.
• To use the specifications of an existing master page grid, grid style, or style sheet, click Load Settings. For more information, see “Loading grid settings.”