AuthType Basic 
AuthName "Secure Content" 
AuthUserFile /home/myuser/public_html/.htpasswd 
require valid-user 

Now start with creating users in .htpasswd defined in .htaccess file. You can add user and password either in plain text or md5 encrypted. 

Adding password in plain text format: 

htpasswd -c /home/myuser/public_html/.htpasswd  myuser

Adding password with md5 crypt format 

htpasswd -cm /home/myuser/public_html/.htpasswd  myuser

• -c : is used only for first time when you create .htpasswd file. If you use it second time, it will remove existing file and recreate new one. 
• -m : is used to save password in md5 format. 

Aus <https://tecadmin.net/configure-basic-authentication-in-apache-using-htaccess/>