Hi:
I'll try to explain it with my poor English.
My scenery is a ring with 3 netonix.
1.- Root Switch (Swtch A)
Select CIST option. Name and Revision must be the same in all switches.. Root Switch priority must be lower ej: 28672
Select Ports enable then must connect with others switches.
Finish
2.- Switch B and C
Select CIST option. Name and Revision equal than Root Bridge. (Ej: Name:test Revision: 10), and check enable ports.
Select MIST instance 1. Write Vlan list. (Vlans is use in each switch)
Select MIST instance 2. Write Vlan list. (Vlans in standby)
Finish.
Advice: don't forget set trunks with all vlans in all switches...
in case to use a utiquiti link put configuration simple, and select vlan manage (put Vlan ID inside box)
If you have any problem i can send you screen shots.
Now i going to test with 4 switch... i'll report test.