By default you sync events to the one Google account, but there is a way to add extra accounts to the app so you can view/sync events to these as well. First tap the Menu icon (three dots) at the top and then choose Settings.
From here, tap on Add Account and select Google from the list (you can select Corporate accounts if needs be, but for this tip we will focus on Google). When prompted, log in or create a new account. The tip here is that when prompted, select only the Calendar option for the item to sync.
Once added, you can head back to the Calendar app to create an event and choose (at the top) which account you want the events to sync to. Note that you can also use the Menu icon at the top to choose which calendar you want to view.