Schedule 

Add Schedule
Click on Schedule, Click on Add Schedule;

Type in new schedule name;
Tab to OR click in Short name field;
Type in 3 or 4 letter short name (shown in DooD);
Click on New Empty or New Duplicate (try changes from the current schedule).

Delete Current Schedule
Click on Schedule, Click on Delete Schedule;
Return or Click on OK.

Change Schedule
Click in Schedule Name field;
Click on Schedule.