How to move login page?

If you mean so that instead of going to https://www.yoursite.com/wp-login.php you can go to https://www.yoursite.com/admin then why not just create a meta refresh at the top of an index.htm file inside a folder called admin in your sites root. That way as soon as the page is loaded i.e. https://www.yoursite.com/admin the index.htm file inside this folder will redirect you to the wp-login.php file.

Instructions:

Create a blank HTML file. In the head section add the following code, remebering to change yoursite.com for your domain.

<meta http-equiv="refresh" content="0;url=https://www.yoursite.com/wp-login.php/"/>

Then save this file inside a folder called admin (if that is where you want to go when you login) and call it index.html.

Now when you visit https://www.yoursite.com/admin you will be automatically redirected to the wordpress login page.

thanks for the reply, but I want the opposite:
when you go to https://www.yoursite.com/wp-admin/ or https://www.yoursite.com/wp-admin.php you get err (404 is fine). but when you got to https://www.yoursite.com/admin/ – you get your regular login page, you can login and administer as normal

any ideas? thnx