How to replace (or delete) the main contact assigned to a Card on Trello board?

[Mehran Barazendeh]

I have a list of contacts/customers made in Crumble for being assigned to a lead card. I want to change the main contact already assigned to a card on Trello board and replace it with another contact, but I cannot do it. I cannot see any way or button to be able to remove an assigned contact from a card or replace it at once. Could you please advise how to do that? Thanks.

[Vronik]

Look at this

https://support.atlassian.com/trello/docs/removing-a-member-from-a-board/

https://www.wishup.co/blog/how-to-delete-a-card-in-trello/

https://trello.com/guide/permissions-controls

[Mehran Barazendeh]

Thanks for this but unfortunately these are not what I am after. I am looking for a way to remove or replace a contact inserted as a field to a Trello card. It is not a card member.