Hello Benjamin,
In order to use NDI inputs you need to install NDI Tools. If you have installed the NDI application you can start the Virtual Input and select a stream you want to use in Pandoras Box.
It is handled like any other live input in Pandoras Box.
There are different NDI licences available. The free version is limited to one stream, therefore it's also limited in PB to one stream.
If you use a paid NDI licence then you can handle more then one stream, but this is not yet tested with Pandoras Box.
Please find the link to our website with the related link to the NewTek driver:
https://www.coolux.de/technology/avoverip/Cheers,
Yvonne