task-scheduler: How can all users view/edit/run the same tasks?

Solution 1:

By default scheduled tasks are user specific, that's why you can only see "your own" tasks. If you choose to create a "normal" task (not the simple task), you will get the option to choose a specific user or a user group.

Choosing - for example - a system account or a user group should make it visible to other users as well (assuming they have sufficient rights to view it). I haven't tried this on a recent version of Win10 but as far as I remember it should work.