To transfer a Team Workspace ownership, please follow these simple steps:
Click on the 
logo in the top-left corner of the UI to open the navigation menu, locate and hover over the workspace you wish to change ownership, and select the Cog Wheel icon to Manage the Space:
Figure 1: Getting to Network Administrator panel
In the Network Administrator panel select the "Members" tab:
Figure 2: Team Workspace Members view
To change a Workspace owner, click on the Cog Wheel icon against the name of the current Owner. Then, pick a new Workspace Owner from the list of suggestions:
Figure 3: Pick a new Workspace owner
To apply and save changes, click the "Transfer Ownership" button.
For any additional questions, please reach out to the Ci Customer Success Team by submitting a request here in the Help Center.