How to Generate User-specific Watermarks in ONLYOFFICE Preview (Without Using Nextcloud)

hello admin
Can the following be achieved (without using Nextcloud):
How can I generate watermarks based on the username when previewing in ONLYOFFICE?
Similar to the functionality provided by OnlyOffice with Nextcloud!

Hey, @josh ! :wave:
You can check out an example of the plugin at the following link:
Protects a document using a watermark.

If that’s not enough, please provide a bit more detailed description of the task :handshake: