Assignees can easily update the status of their activities, even if they don't have editor rights. This must be done every time an activity is completed. It is also good practice to review and update completion ratios of ongoing activities at the end of each day.
The completion ratios of activities are indicated by small progress bars in the Activities list.
Method 1: The Completion Slider
Assignees can easily set what percentage of their activities are completed by clicking on the activity and moving the completion slider horizontally. Moving it to 100% marks the activity as completed and notifies the owner of the activity.
Method 2: The Quick Complete Check Box
Assignees can also quickly mark their activities as completed by clicking on the quick-complete checkbox on the Activities list. This box is only available if the user is an assignee of the activity.