What skills or qualities should a planner or scheduler have?

if asked "what are your development goals as a staff scheduler" what is the right answers to give?

He must know & collect all the information, function and activities in different field and tally with his knowledge whether he should take the responsibility. If yes, preparing a perfect work plan including activity chart would be his Skill or Quality.

Projects have numerous activities that need to be planned and scheduled properly so that they may be completed on time. Planning identifies what activities are required whilst scheduling determines the sequence of these activities. Planners and Schedulers manage work priorities, schedules, work orders and plan revisions once there are design changes, unavailability of materials or services and other project disruptions. They typically use project controls and project management software to manage these functions. 

The planner have to make timeline for a task .. have to be good time managemnet...have the sense of jelous about his job ... 

To manage critical activities, monitor progress, re-schedule activities, awareness about resources associated with activities, to prepare recovery schedule, bi-weekly, monthly progress reports, mobilization and demobilization and expanding activities to possible to further levels for best control, execution and timely completion of project.

Prioritization is the most important.