Friend watching show - marked as watched?

I don’t have a plexpass, I’m just bought the app. In this case if the invited friend watches a show will it be marked as watched on my server? I’ve looked online but the only thing I can see is the answer is no if you have a plexpass but I’m not sure why that would be a feature of only plexpass and not standard with the free server. Thanks.

Is your friend in the same local network as your server and watching with a DLNA client?
(Even if only ‘virtually’ so, by means of a VPN?)

Has your friend a plex.tv account of his own or did you share your plex credentials with him?

Have you linked his Plex client device with your account perhaps by going to https://plex.tv/link with your web browser?

If the answer to every question above is ‘No’, there is only one other known cause for this effect:

Sorry this was a question - I don’t have in issue. If you don’t have a plex pass and an invited friend watches a show is it marked watched when I log in or does plex track each user individually?