All users except for collaborators can filter streams. Collaborators can only hide automatic updates in streams.
In the Activity Stream of tasks, folders, and projects, it's only possible to filter for All updates or Only comments. More filtering options are available in the Global Stream and Stream view.
Everything shows all changes and comments on tasks, folders, projects, or spaces shared with you
Everything I follow shows the changes and comments on all tasks, folders, and projects that you follow (this is the default)
Assigned to me shows the latest changes and comments on tasks that are assigned to you
My conversations shows the changes to and discussions about tasks, folders, and projects that you created, updated, or commented on at least once
Hide auto updates shows only comments and the history of file attachments.
Select a filter in the right-hand panel of your Global Stream or Stream view, which will be applied immediately.
In the Activity Stream of a task, folder, or project, click the filter icon in the upper right-hand corner and select:
All updates see all changes and comments related to the task, folder, or project
Only comments see only comments and the history of file attachments