Password Protect Access

Create .htpasswd file with username

htpasswd -c .htpasswd username

Add additional username to .htpasswd file

htpasswd .htpasswd username

Groups

.htgroup file:
it: user1 user2 user3
admin: user4 user3
boss: user3

Group Access

.htaccess file:
AuthUserFile /full/path/to/.htpasswd
AuthGroupFile /full/path/to/.htgroup
AuthType Basic
AuthName "Password Protected Directory"
<Files "mypage.html">
Require group it
</Files>
<Files "myotherpage.html">
Require group admin
</Files>
<Files "myotherotherpage.html">
Require group boss
</Files>

Single Directory

.htaccess file:
AuthUserFile /full/path/to/.htpasswd
AuthType Basic
AuthName "Password Protected Directory"
Require valid-user

Multiple Files

.htaccess file:
AuthUserFile /full/path/to/.htpasswd
AuthType Basic
AuthName "Password Protected File"
<Files "mypage.html">
Require valid-user
</Files>
<Files "myotherpage.html">
Require valid-user
</Files>

Exempt Inside Directory From Password Protection

.htaccess file:
Allow From All
Satisfy Any