Get the time left before SLA Warning or breach displayed based on business hours

Hi, I would like to have the time left before warning or breach displayed based on business hours of our teammates. For example, if a message was received 5.04 pm CET - Our business hours 9.00 AM to 5.00 PM CET. Time left is already displayed while I would like it to be displayed only from business hours and have only the time hour and min left displayed before SLA Warning tag is applied.