I am setting up a site for a volunteer organization. One feature we would like to incorporate is a way of setting up activities (ie: Meetings, Projects, Events) and log which registered users participated in those activities. All members will be registered users of the site. The output would allow the Admins to see:
1) List of individual users participating in individual activities.
2) Users would see a list of individual activities they have participated in.
3) Count of activities by type per individual user.

So far, all of the attendance and event tracking are for generic visitors or to sell tickets to an event, which I don’t have. None of them so far has the ability for the site Admins to check off or enter a name of users that attended an event, let alone see any reasonable output.

Anyone have any suggestions?

Take a look at https://www.ads-software.com/plugins/wired-impact-volunteer-management/ and try this on Google: “wordpress nonprofit organization plugin”