distinction between project leader and team member

[Jos van Wijk]

How can i indicate the project manager?

Below: The first teammember is project manager/leader and responsible. The second is a teammember, not responsible. 

[Mike]

Hi Jos,

The Custom Fields Power-Up would be a great way to do this! Natively, there's no way to define one card member as any different from another, but with Custom Fields, you could create a new field on the card to designate the PM, and you could then notate that there: https://help.trello.com/article/1067-using-the-custom-fields-power-up