There are two options for adjusting the font size of your plans. You can adjust the size of all of your plans at once or you can change the font size within a specific lesson.
To change the font size of all of your plans, click the wrench icon in the top bar of your weekly view.
This opens the advanced options tool bar. Under "Font Size", you have the option to increase, decrease, or rest your font size.
To change the font size for a specific lesson, click "Edit".
In the text editing toolbar, there is a "Font Size" option. Select your font size before typing your text, or highlight to select the text you want to change and then select the size you want.