Adding other items to your iRedMail server

==== Required information ====
- 0.8.6:
- MySQL:
- Ubuntu 13.04:
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I'm looking to install osTicket onto my iredmail server. I've researched it a little, but need to know where in the filesystem to stick it. I (though very new to the hosting business) have no idea of where to install osTicket so it would show up on http://mydomain.com/support. Can someone explain to me how to do this?