Sleep Option configuration


I’m having a big enough digimesh network (60 devices). I really searched a lot in the datasheet but I couldn’t find a clear answer to this. In my network, there is a mains powered device configured in sleep support mode and as sleep coordinator. I also have some other mains powered devices configured as sleep support (about 7), for network extension. The rest of the devices are synchronous sleep devices configured as non sleep coordinators. My question is, should I configure the sleep support devices as non sleep coordinators or as nothing?? (both sleep and non sleep coordinator bits to 0, in SO option)

Only one should be configured as a sleep coordinator. The others should have nomination enabled if the sleep coordinator is not there to keep the network in Sync.