Can I have two Organization Admins?

Yes, you can!  In fact, you can have as many Organization Admins as you need. To give someone Organization Admin status, do the following:

1. On the upper right corner, click on your company's logo and then click Organization Settings
2. Go to the Users tab
3. Find the user you wish to make an Organization Admin and click the Edit icon
4. In the pop-up, change the Role field to Organization Admin
5. Click Save button

This can also be done when you invite a new user to the organization. After specifying their email address, click the Role field to specify Organization Admin.