For the specific module requested, I. Think the issue is data entry, change and validation.

If you have a decent database with the info it can be shown pretty easily

Some personal info I might not want to be shown to everyone
My vacation schedule or health status for instance.

That’s an awesome idea. The advantage being that you could have a scrolling calendar so you always see 12 months with the current date at the left. In addition, people could then pull it up on their own desktop to see it.

My first thought was to set up a google calendar for each person (just for this) and maybe use something like MMM-CalendarExt3 to display it. I think you’d have to standardize calendar entries (like “Sick”, “Holiday”, “Personal”, “Work-at-Home”) which could be picked up on for the color formatting.

But there might be other, simpler options, such as a simple text file where people could add dates they were out (“Uncle Roger”,“20260428”,“Sick”) that could be updated via a back-end webpage which is then used to fill in date cells in a simple table.

I suspect it will be a fair bit of work to get it set up but worth it in the long run.

You could look through the list of existing modules to see if there’s something that would work: https://kristjanesperanto.github.io/MagicMirror-3rd-Party-Modules/ or https://github.com/MagicMirrorOrg/MagicMirror/wiki/3rd-Party-Modules

If you don’t have someone on staff who could handle the project, maybe find a teenager/college kid who would do it for a reasonable stipend?

Best of luck!