How to configure UPS with PC and 3 NAS boxes

Thanks StephenB and Sandshark , Cyberpower UPS is now configured to manage 3 NAS + 1 PC + 1 switch. 

Re: NUT config file documentation, I was referring to the actual comment lines and sample code in the config file itself. Those comments/samples do not mention the "1" nor the "slave" entries at all. I didn't think to look at additional documentation since the pseudo-code was right there in the config file. 

To Sandshark 's comments regarding the entry

MONITOR ups@192.168.1.210 1 monuser pass slave

I was a little confused by his statement that the password looked incorrect. The password "pass" is right there in the entry after monuser, as it should be. The command worked immediately, whereas leaving off the "1" and the "slave" returned an error. Looking at the NUT logs, I can see it's all good.

Also re: Sandshark 's comments regarding NUT conflicts as it fights with the NAS for control, that's very helpful to know. I have rebooted the PC and NAS to check for any issue, but I'm not seeing anything obvious. The NAS happily reports the UPS in its list, just as before, with all the same settings. The other 2 NAS boxes report the UPS in their lists too. And the PC auto-started the "Start WinNUT UPS Monitor" app (I added it to the PC start-up folder), so I guess it's happy. If I do have a conflict like he described, maybe I'm not just adept at seeing it. Anyway that was good input, I'll poke around and eventually, run a test to see if it all works OK. Gulp. 

Thanks for all the help!