Workflow to update the Teams of Leads if Default Team of User is changed

[shef]

It's currently not possible to create a workflow for this case.

When the Default Team of a User is changed the Teams field for all Leads/Contacts/Opportunities assigned to this user must be updated to remove the old default team and add the new default team.

Kindly check the screenshot, because it's explained there how to reproduce this.

I have also opened a Case on the portal for this where they suggested to me to request it on this forum, kindly check case # 753.