Create an SLA Plan:
Department > Equal > 'A' AND
Ticket Status > Equal > Open AND
Ticket Priority > Equal > Urgent AND
Ticket Owner > Equal > Name of the owner AND
Create a Ticket from Staff CP with department equal to 'A', status = open, priority-urgent, owner='set above', SLA Plan is not applied on the ticket. When we click on Update, the SLA Plan is applied.