What does the clock operation channel setting do and what is it supposed to be used for?
The Clock Operation Channel changes the ports on which the Clock Server runs. It is an extremely rarely used feature. They should look as follows:
Operation Ch 1 = TCP 1901/1902
Operation Ch 2 = TCP 1903/1904
Operation Ch 3 = TCP 1905/1906
Operation Ch 4 = TCP 1907/1908
We typically do not advise any change to this unless we are aware of a very specific need for a multi-control panel situation.