web map display multiple devices
We display all devices on the map by default. You don't need to do anything special.
If I need to display the activities of multiple devices on one web page at the same time, do I need to purchase the paid version?
I think you didn't read my comment.
How to operate on the demo.traccar.org website so that everyone can see the track of all devices, instead of connecting one device at a time
Not sure I understand the question.
In the https://demo.traccar.org/ screen, how can I set it so that everyone can see the tracks and time of all devices?
You obviously won't be able to do it on the demo server. People have real devices there that they don't want to share with other random people. I'm very confused by this question.
How can I display multiple devices on a web map at the same time and share it with all network users?