Upgrade mikrotik devices with dude server

Hi,
I have the dude running.
Now I want to upgrade all the mikrotik devices.
How can I do this with the Dude?
I have version 6.41.2 running.

In the Dude I cannot add the NPK files in Files.

How must I do this?

Problem solved after uploading NPK files and additional packages with SFTP.