There are a few different ways you can accomplish what you want. From running in an interactive mode, using "Recode" is probably the easiest way.
Select the column to be recoded
Then click on the red triangle in the column panel and select "Recode"
Then just fill in the new bins you want
and then click on Done, and select new column, and you will find the new binning column
You can also select to make a "Formula Column", rather than a "New Column". If you do this, the new column that is created is done using a column formula, rather than hard coded values.
Jim