StudioBinder allows you to add and swap between multiple calendars, but if you simply want to edit an already existing calendar, just follow these steps.
Step 1 — Calendar Menu
Access your projects calendars by clicking the Calendar Icon.

Step 2 — Pick a Calendar
Hover your mouse over the calendar you'd like to edit, then click the Edit Icon (✎)

Step 3 — Edit Calendar
Make any necessary changes to the title and click Save.
