OK, not ideal, but assuming you are transferring to the Group in Architect, you can set the timeout there. I'm not sure if this will override Group settings. If that doesn't work, you could configure it to attempt the transfer again if it fails (twice, if you want three minutes.) You could either use a loop, or just three transfers daisy-chained together. If you want it to the go to VM, make sure that VM is only enabled on the last attempt.
(BTW, what I'm seeing is that it will ring for up to 2 minutes if you just put a DID on the Group....)
HTH
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Paul Simpson
Eventus Solutions Group
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