You can change the portal owner any time, with an operator who has an administrator role. If you don’t have an operator with administrator role, you have to change the role of the existing operator to an administrator. You can also add a new operator with an administrator role.
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If you'd like a personalized walk-through of our data preparation tool, please request a demo and we'll be happy to show you how to get the best out of Zoho DataPrep.