Hmm thanks for the response ..1. I want to set 30 minutes so i set 0.5 hour on SLA Column periode, why can't and the time is rounding to 1 hour ?2. I try create 2 SLA for Help topic and Departement, both set time in 1 hour..i have 2 department for test Helpdesk Responder & IT - Infrastructure..When user create ticket automate receipt to Helpdesk Responder department,, i test no respon until 1 hour , overdue notif is sent to Helpdesk responder dept member.. then i transfer ticket to ITInfrasturcture dept, i try not respon ticket until 1 hour but IT infra dept not recepit overdue notif.. i want when ticket is transfered to other department, second SLA is run...how ??Thanks