We require the version 12.3 of Blackmagic Desktop found on the Blackmagic Design support pages https://www.blackmagicdesign.com/uk/support/family/capture-and-playback
Cinedeck controls the DeckLink card configuration so no configuration is requiredFor Cinedeck to be able to control the Decklink card it needs to be configured for duplex mode.
To set this up please do the following:
Open Blackmagic design Desktop Video Setup and click on the three bars on the bottom right.
Then click on the Menu item to modify
A window will pop up click on connectors
In the dropdown select SDI 1 & SDI 2
Repeat this for all the available inputs. If you have a BMD Quad 2 card this would be the first 4 for multiple cards this need to be done for each card.