After checkout was is completed you will be received by email your company receive an email with the Serial Number that you should use for activation.
Open License Information page and choose Activate for open popup that allow to . To activate your Serial Number type it in the opened popup box.
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The popup will be opened to open for activation.
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Type your serial number and click on Activate button again.
This is activation will be applied for all users of your organization (tenant in Azure AD).
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