Planning your indesign pages using margins and columns bookmachine this is an excerpt from nigel french s book indesign type.
Indesign margins and gutter.
Choose layout margins and columns.
Enter values for top bottom left and right margins as well as the number of columns and the gutter the space between columns.
Open the pages panel window pages and select the thumbnails for the pages you wish to change.
Some people use gutter to describe the space between 2 columns other use it to describe the space between two pages.
Use margins and column guides to position content.
Indesign uses the first definition in margins and columns so i m going to guess that is what your question is about.
To achieve uniform spacing set your gutters to the same value as or a multiple of 1 5 or 2 for example the leading of the text.
Because adobe indesign layout pages can include column guides as well as margin guides you can establish the gutter dimensions for a variety of layout options within one set of guides.
Assuming i guessed correctly are you trying to define the gutter widthor gutter position.
Or you can update or add a gutter to an existing project by selecting layout margins and columns from the top menu bar.