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:

For filter-condition groups, turn on Keep original value when no group matches to have values that don’t match any group keep their original value instead of being placed in the “Other” bucket.
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.