When you finish your portion, or the whole of, a task, you click 'I'm Done' on My Assignments screen (see illustration here).

This causes the task to disappear from My Assignments.

However, if you have been working on the task along with other assignees, and they still unfinished with their work on the task, it will not get the completed status until the last of the assignees clicks 'I'm Done'.

When the last assignee clicks 'I'm done' the activity will close without a prompt. Closing the last open activity in a project using 'I'm Done' will close the project without a prompt either.

If you enable the "I'm Done" button in the Activity Center grid (see Action and attribute buttons to learn more) you will see such tasks greyed- and crossed-out, like so: .

'Work is done' check mark

To indicate who of the assignees have completed their portion of a task, each assignee has the 'Work is done' check mark available in Activity details screen.

Completing task

The task will close when the last of its assignees clicks the 'I'm Done' button.

Users X and Y are working on the same task called 'Design Website'.

Since the task is active, they both will have it on their In Progress tab, My Assignments.

As user X finishes his part, he clicks 'I'm Done'. This will have a three-fold effects:

1. The task disappears from user X's My Assignments page.
2. In Design Website task's details, in Assignees section, user X will have the 'work is done' checkbox selected automatically.
3. The task's status will not change.

User Y will, as before, have the task on his My Assignments page, and the task will not get Completed status until user Y clicks 'I'm Done'.