How to delete a family member duplicated

Hi Aninha88

welcome to the Apple (user-to-user) Community.

Thank you for your two questions to the community. (Addressed separately below)

Re: How to delete a family member duplicated

Apple support's article: Leave Family Sharing - Apple Support

says:

On your iPhone, iPad, or iPod touch

1. 1. Go to Settings.
   2. Tap Family. If you don't see Family, tap your name, then tap Family Sharing.
   3. Tap the name of the family member that you want to remove.
   4. Tap Remove [your family member's name] from Family.

______________________________________________________________________

Re: How to manage the child restrictions?

How to: Set up parental controls with Family Sharing on iPhone

More info: Use parental controls on your child's iPhone, iPad, and iPod touch

All the best :-)

Thank you for your reply and info., Aninha88,

I think I see what you mean about the problem being more complex.

Apple Support have an article online for help with deleting an Apple ID account:

How to delete your Apple ID account - Apple Support

else, you might want to reach out to Apple ID support for help with the problem:

Official Apple ID Support Webpage:

(There is a "Get Support" link as the bottom of their webpage (link below) (ie you may be able to choose from online chat, phone, eMail, etc.)

Apple ID - Official Apple Support

or

Apple phone numbers around the world

Contact Apple for support and service - Apple Support

If your country is not listed: 

Apple Assistance:

Choose your country or region - Official Apple Support

All the best :-)