[otrs] Reg: Approval workflows

Hi All, Has anyone of you configured approval workflows? Like we require approvals for some specific requests like software installation, new hardware etc. Is there a way we configure it in OTRS so that whenever a ticket is raised for some special request there is an approval workflow, where the ProjectManager approves the ticket and later the IT department addresses the ticket. Please help. Any kind of help is greatly appreciated. Best Regards, Lokesh K S