Insert the cursor in
the paragraph you want to change, or select a type object to change
all of its paragraphs. If you don’t insert the cursor in a paragraph
or select a type object, the setting applies to new text you create.
In
the Paragraph panel, adjust the values for Space Before( or ) and Space
After ( or ).
Note: If
a paragraph begins at the top of a column, no extra space is added
before the paragraph. In this case, you can increase the leading
of the first line of the paragraph or change the inset spacing for
the type object.