Allow Overlap in Time Tracker
Group managers in Time Tracker have an option to
Allow overlap on the
Group settings page.
When enabled, group members can have
overlapping time records in the system. For example, if one record started at 8:00 and ended at 10:00, a user can create another record that starts anywhere between 8:00 and 10:00.
The option makes sense when users utilize the start and end times for their records and does not apply to duration-only records.
Disabling
Allow overlap makes sure that only one user activity applies to any point in time.
Time Tracker User Guide