Hi Christoph! Welcome to Trello community!
While this exact functionality isn't currently available in Trello, you aren't alone in wanting this as we have had other users interested in this as well. With that in mind, I've added you as a "+1" to our existing suggestion, which you can access here: TRELLO-98
I would also recommend you to visit that suggestion, log in with your Atlassian account, and click Start watching this issue on the right panel. This will help our product and engineering team understand more about which functionalities our users are interested in. Also, when the ticket is updated by our product team, you'll be notified via email.
As a workaround, might be a couple of Third-party Power-ups which allow you to share specific cards on your board. You could take a look to see if it achieves what you're after. Because many of these services are provided by separate companies, outside of Trello, any costs associated with their products are also separate. We're also not able to endorse or provide support for any third-party Power-ups (since we don't work with them directly).
You can take a look at the Power-up here: https://trello.com/power-ups/60d93bb780ee244d5d2b1edd
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.