Discount threshold override setup

Application: XStore v19.0.1

When trying to setup a discount to prompt for a manager's override if over 'x' amount (set in dsc_discount.max_amount or dsc_discount.max_percentage, depending on discount type) XStore is prompting for 2 overrides: first to apply the discount and if needed a second prompt to allow the discount over the threshold.

How would I configure the system to only prompt for an override when the threshold is exceeded? I imagine the discount would need to have an associated privilege_type value that is in sec_privilege to designate which user roles can perform the override.