PaulDaisy and TimG - thanks for responding.

Since his reply was first, I started by trying the "Find/inspect..." button per PaulDaisy (did not know about that button on the Video/Configure... screen):

It quickly fixed both PTZs, thanks so much!!!

Here is example network config from one of the two PTZs (mini dome PTZ in garage):

I currently run the latest BI5 stable (5.9.9.14) operating with 19 cameras. Was having loading issues and fixed that by changing all cameras to add default substream (previously none defined): loading dropped to below 20% - yeah, loading issue fixed! (Also changed general config under CAMERAS: set H...