ShowMojo can connect to calendars on two different Google accounts at once. This is done by sharing individual calendars from one Google account to another.

Just follow these steps to share a calendar between Google accounts:

1. Log in to the Google account that you do NOT have connected to ShowMojo (or the account you do not plan to connect to ShowMojo). 
2. On the upper right-hand side, click on the cogwheel icon and choose Settings. Locate the Calendar tab.
3. Find the specific calendar you want to share. Look for the Sharing option and click the Share this calendar link. 
4. Add the email address of the Google account you DO have connected to ShowMojo (or the account you do plan to connect to ShowMojo). 
5. Click the Add Person button.
6. If you want to set specific parameters as to what you want to share, you can click the drop down menu. The See only free/busy setting is a great privacy option -- it means that necessary busy time would be shared with the other calendar but none of the personal details.
7. Don't forget to click on Save button to keep the changes you made.

Now that you have these calendars shared, just go to the Calendar Integration Settings as you normally would, and you will see the new shared calendar(s) available to use.