Get a program called Midi Patchbay.
Then, in Midi Patchbay make a routing from a midi controller (given you have one) to the tempest's 16 tunings channel.
Copy that setting 5 more times.
Now you can control all 6 of the Tempest's voices in a mono mode kind of way (tip: the portamento still works in this mod which is very nice.)
To create thicker detuned sounds i recommend playing around with the lfos, random, static and mod amounts on the "mod paths' page.
hope this works as well for u as it is for me!
†donnersocial†