Hi Petri,
You got a point there. Normally 1350 agents only require about 10 dispatchers which can easily be put in a Team manually. But with 280 sites and probably as many dispatchers I can imagine you would like to have some automation.
Unfortunately the current Team Rules don't really give you an option (unless you want to rename all dispatcher machines so you can use the FQDN Rule). I suggest you put in a feature request at
support@ressoftware.com explaining your situation. They might be willing to add 'RES Wisdom Dispatcher' to the list of Computer Functions in the Team Rules.
Good luck,
Rob