You can do this a few different ways.
1. Use the "Recode" facility, which will allow you to either change the values in your existing column, or to create a new column with the binned values
![bin2.PNG bin2.PNG](https://community.jmp.com/t5/image/serverpage/image-id/11241i81BC9AAC0830069A/image-size/large?v=v2&px=999)
2. Use the "Value Labels" column property, which will allow you to change the groupings for a column, without actually changing the stored values for the column
![bin3.PNG bin3.PNG](https://community.jmp.com/t5/image/serverpage/image-id/11242iAB8E068364A2F7E9/image-size/large?v=v2&px=999)
3. You can download the Interactive Binning Addin that Jeff Perkinson wrote
Interactive Binning
Jim