Yes, you can! In fact, you can have as many Organization Admins as you need. To give someone Organization Admin status, do the following:
- On the upper right corner, click on your company's logo and then click Organization Settings
- Go to the Users tab
- Find the user you wish to make an Organization Admin and click the Edit icon
- In the pop-up, change the Role field to Organization Admin
- 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.