How can I change a standard user back to an administer?

Do you still have an admin account in System Settings > Users & Groups? If so, make sure you are logged into it, select the Standard user, click the i in a circle next to it, enable "Allow this user to adminitor this computer".

If not, things are more complicated.

If there are no Admin accounts, see this article: https://osxdaily.com/2022/03/25/no-admin-account-mac-fix-macos/

It should work for Ventura as well.

sharonmvr wrote:

Mine has another administrator but they can't do certain things like add administrator or change a standard user to an administrator.

That is extremely odd. Is it a managed computer?

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