How do I become an authorized user on a Comcast account ?: I am trying to become an authorized user on my wife's Comcast account but I do not know how to do it?

I am trying to become an authorized user on my wife's Comcast account but I do not know how to do it?
ETA
86 mins·5 steps
NEED
Email address on the account, Password
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Let us save you the time!
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You must be an authorized user on the Comcast account in order to make any changes on the account. Follow the steps below to authorize yourself. Step 1: Log-in to the user account http://xfin.tv/1YRfnJw Required information to authorize yourself on the account: Username Log-in password
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Step 2: Click "Users & Preferences"
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Step 3: Click on the plus symbol and click "Add user"
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Step 4: Enter in the information provided below for new authorized user: User's first name & last name Create a new username for the authorized user Create a new password for the authorized user Select the secret question as well as the answer to the question Agree to the terms and conditions
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Step 5: Click "Save" and you will automatically save the user's information and add them as an authorized user.
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