How can I remove my own master login?

New to Apple products. Just bought MacBook Air and in some way, while creating users, I created a master connection to turn the Macbook Air. After you enter the password for this, then a login to my account and other users access to appears. How can I remove this only one password is required by any user to access and use?

I tried to access and modify through user preferences / users / apple ID or iTunes. No luck

Looks like you've probably enabled Filevault...

Use FileVault to encrypt the boot on your Mac - Apple Support disk

Or maybe a Firmware password...

Use a password of the firmware on your Mac - Apple Support

Or do you see any of these items that you see? You can cancel these features if you don't need them, but it would be useful to work who are active

If they do not match, let us know what you see at startup (maybe a picture of the screen if you can).

Tags: Mac OS & System Software

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