Hi Muhammed,
to work with the Databus, you need to open the Data Connections on your Industrial Edge Management.
You can find it in the left menu bar as shown in the picture below
After clicking on the Databus tile, you are selecting your device on which you want the databus to configurate.
After the Launch the page is being loaded, where you can see the menu, where you can configurate everything.
Hope this answer helps you.