When creating subtasks and assigning the ticket and agent. Is there a way to resolve the parent ticket once the main task is complete and then have the subtasks completed later? 

I ask this for when I have agents out for a day or two where the subtasks have to be assigned, but the main tasks ( I would have on the parent ticket) can be completed that day.

Another example is In some cases if I was to create a employee provisioning ticket and the sub task was to provide training to the new employee it could take up to a week for the new employee to receive training. This could effect the SLA time on one persons tasks vs the other. Is there a way to resolve this?