Effective temporal coordination between individuals and organizations is becoming increasingly crucial in today’s dynamic business environment. This coordination process typically involves a series of interactions among temporal structures, since temporal structures provide a possible explicit and implicit mechanism to structure activities across time and space. Organizations should be more proactively engaged in temporal coordination in order to ensure that temporal structures are now used to enhance and integrate business processes. However, the temporal structures have not been explicitly integrated into the current temporal coordination system. Therefore, through a temporal structure lens, this research was designed and carried out to identify what difficulties and challenges the individual users have with their current temporal coordination systems in their personal time management practices. Based on two sets of in-depth interview studies with a group of busy knowledge workers, a set of system recommendations to incorporate more extensive temporal structures was made, in order to enhance the current electronic coordination systems, such as personal and collaborative calendars.