How to make card only who assist can show this card ?

[Amr Rwafi]

I need to create a card and assist only one of my team members only this one can see this card 

[Carlos Garcia Navarro]

Hi @Amr Rwafi ,

If I understand the question correctly, it's not possible to have per-card permissions in Trello. As described in this post, "once someone has access to a board, they'll be able to see and edit all cards on it."

https://community.atlassian.com/t5/Trello-questions/Trello-card-level-permissions/qaq-p/979670#:~:text=Currently%2C%20Trello%20doesn't%20support,in%20your%20case%2C%20for%20students.