The following design option works for full calendars only.
To find this design item...
Step 1: After you log in, click on Calendars (brown box below).
The Your Calendars page will open.
Step 2: Choose the calendar you wish to modify (brown box below).
Step 3: Click on Design (brown box below).
Step 4: Click on Events (brown box below).
Step 5: Scroll down until you find Show Event names in cell and Selecting day opens modal with events list.
To modify this design item...
Step 1: The two items below are toggled off.
Step 2: As you can see from the image below, you cannot just toggle on the modal option. If you do so, you will receive a reminder as follows: "This option requires 'Show Event names in cell' to be turned on." (red notice in image below)
Step 3: When you toggle them both on, your calendar will display the day's event names in the day's cell as in the image below.
Step 4: How the modal works
Clicking on Coffee (brown arrow above) will cause the following pop up:
Clicking on Brian's Test (blue arrow above) will cause the following pop up:
Viewers return to the main calendar by clicking on the X in the black circle located in the right-hand corner of the modal (pop up).
Click Save at the bottom of the column to save your changes.