You can use the Calendar program as a time manager and for recording appointments and reminders.
To open Calendar, tap the Calendar button on the panel or click on the Calendar icon which is visible from the Programs screen.
When you first open Calendar, you'll see a planner for the current day. You can also select a planner for the current week or month by selecting the appropriate button on the Menu Bar. Where you have selected the Weekly or Monthly Planner, the current day will be hightlighted by a red border. You can also scroll through days, months and years by clicking on the arrows beside the date.
You can start adding your appointments and other entries straight away by moving to the appropriate day and typing them in.