Binning and grouping custom fields
JustAsk offers some accelerators for common custom calculations. To bin or group strings or values, select “Group” from the field picker menu. String values can be grouped into grouplets, including a left over bucket for remaining values:

Numbers can be binned using a comma delimited list of values. JustAsk will auto-generate bins based upon the max value and a proportional split, but the boundaries can also be applied by hand:

As with other custom fields, explicit names or views can be applied alongside descriptions.