We are currently running osTicket (v1.9.4-rc2). Can a ticket be assigned to two or more persons/groups ?
Beside that you shall really upgrade (1.9.4-RC2 is the seconde Release Candidate of 1.9.4) you can easily create a team of agents which can then be used.Admin Panel > Agents > Teams > Add new team
Tickets cannot be assigned to more than one person.Tickets cannot be assigned to groups. Groups are security based.That being said: Tickets can be assigned to Individuals or Teams. Teams can have people that are not in the same department on them.