I want to add an additional OneClick in my Spectrum environment- Are there any special setup requirements?
No, there are no special setup requirements. When adding an additional OneClick in your Spectrum environment there are no special setup requirements.
You would install and setup the additional OneClick as you have the existing OneClick making sure to point it at the MLS Spectroserver.
Note: This additional OneClick would not be a fault tolerant secondary to the existing OneClick. There is no support for fault tolerant OneClick in Spectrum.