thank you reaching out to the Community and @karstenkoehler for posting about this feature update. I wanted to chime in here - this feature went live this week and is available in our Sales and Service Hub Enterprise. You can read more about enrolling and unenrolling contacts in sequences with the help of workflowsin this Knowledge base article.
Use a workflow to unenroll a contact from a sequence?
SOLVE
Hi, @karstenkoehler I don't have that option to enroll or unenroll from a sequence under External Communication (or anywhere else). Is this functionality rolled out to everyone?