I want learn to add JQL to filter by Specific Collaborators

[Disha]

Hi,

I want the ability to filter the board by a specific user from the collaborator field in the issue.(I can choose who or probably the one I select in the assignee) 

How do I write a JQL for that?

[Dave Mathijs]

HI @Disha welcome to the Atlassian Community!

So, you don't want to filter on system field Assignee (by clicking on the avatar of the assignee) but you want to filter on a custom field called Collaborator that you created yourself, correct?

Please note that you cannot use another user picker custom field (like Collaborator) to filter issues on a Board.

You can add a Quick filter in the Board settings of your board, but then you'd have to create a specific quick filter for each collaborator (which might not be very efficient and cumbersome).

Your JQL would then look like 

collaborator in (<type the name of the collaborator>)

You would need to repeat this step and create a quick filter for each collaborator.