Click on the calendar in the top left corner.
2. When you are in the calendar you can move it in three ways.
1. If you are using a laptop, use two fingers moving up and down together on the trackpad to move the calendar.
2. If you are using computer with a mouse, you can move the calendar using the tracking wheel in between the two buttons.
3. If you are using a device with a touch screen you move the calendar with your finger.