Trying to move a minor when the original parent is no longer on the account.

Hello Emanon11,

Welcome to the Xbox Community Forum. Thank you for sharing your concern with us today and we hope that all is well.

A child account that is not over the age of majority cannot leave the group on its own.
You need the Family Group organizer to remove the child account from that group.

If you're over the age of majority (for example, 18 in the U.S.), you can remove yourself from your family group by using a Windows device.

On the console, any other organizer in the family group can remove you. To do so, have them follow the steps in the preceding section.

Note If you're the only organizer in a family group that includes child accounts, first remove the member from the family group. After you’ve removed them, add them to another family group so that they can continue using Xbox services.

To remove yourself online:

1. Sign in to your family Microsoft account.Microsoft account
   
2. Under your name, select Leave family.
   

Remove a family member on your Xbox

1. Sign in with the appropriate account on the console.
   
2. Press the Xbox button  to open the guide.
   
3. Select Profile & system > Settings > Account > Family settings > Manage family members. If prompted, validate that you have the authority to make this change by entering your password or PIN.
   
4. Select the account that you want to remove from the family group.
   
5. Select Remove <Name> from family, where <Name> is the person’s name that you want to remove.
   
6. Select Remove from family to confirm that you want to remove the family member.
   

Remove yourself from a family group on your Xbox

If you're over the age of majority (for example, 18 in the U.S.), you can remove yourself from your family group by using a Windows device.

On the console, any other organizer in the family group can remove you. To do so, have them follow the steps in the preceding section.

Note If you're the only organizer in a family group that includes child accounts, first remove the member from the family group. After you’ve removed them, add them to another family group so that they can continue using Xbox services.

To remove yourself online:

1. Sign in to your family Microsoft account.Microsoft account
   
2. Under your name, select Leave family.
   

Please see: Remove yourself or a family member from your family group on Xbox | Xbox Support

We're looking forward to hearing from you. If there are any inquiries about our description or if there are any misconceptions, do reply to the post.

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Thank you for understanding.

Child accounts

An Xbox LIVE child account can move to a new region even if the parent account stays in its original region. But the parent will still have to accept the Terms of Use in the new region on the child’s behalf.

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If the child is a minor (as defined by applicable law) in one region but isn’t a minor in the other region, the account can’t be moved between those regions.

Looks like as per the second paragraph, it doesn't seem to be possible. You may have to wait until you are 18.

I think it's possible it sets a global restriction, but when you try to access that content it asks for the parental passcode. As such, the two parental accounts would be able to access the restricted content by knowing the passcode whereas the minors' accounts
could not.

Hello,

"Parental approval" is needed if your account is open for a minor. In this case the minor account should get permission from the parent's account to play certain games.