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automation: No more than one member per card

Bin Liang
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March 9, 2024

I want to achieve no more than one member per card.  I want to use a logic

condition: whenever a member is added to a card

action: remove all other members in the card and keep the new one

I am new to Trello automation and love a quick tip

1 answer

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Mutya A
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
March 11, 2024

Hi Bin Liang,

I managed to spin up an automation that will cater to your use case. You can use the Automation member variables to use addedusername for the newly added member. Here's how to set it up in your Rules:


The only caveat is that it also applies to newly created cards. When you add a first member to a card, it removes it and then adds it back again. There is no condition for me to check if there is more than 1 member in a card. It's possible that you can enhance this automation and make use of Custom fields to track the number of members added, if you're on Premium subscription.

Hope this helps but let me know if you have any other questions.


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