A: Yes.  Select any numeric column from the pull-down list in the Attribute Manager and then scroll to the bottom of the binning list and choose Edit.  Select New and change to Value. Click on the Add button (Green Plus) and enter the first cut-off value.  Repeat this process to add more entries and enter values.  Click OK to finish.

To apply to a dataset select the numeric column to use from the pull-down list, choose a colour ramp to apply and then select the saved binning range from the list. Click on the Auto-Attribute button to apply.