NameVirtualHost 192.168.1.10:80

<VirtualHost 192.168.1.10:80>
# virtual host web1
ServerName 192.168.1.10
ServerAlias web1
DocumentRoot /www/websites
</VirtualHost>

The main website for this vhost will point to the folder /www/websites.

If you make other folders under /www/websites for eg web1 (path: /www/websites/web1), now http://192.168.1.10/web1 will automatically point to the web1 folder. If you make /www/websites/web2, it will automatically point to http://192.168.1.10/web2