Currently application is related to the (sub)domain, e.g.:
app1 -> example.com
app2 -> a2.example.com

I would like to create new application, but use alias instead of subdomain:
app1 -> example.com
app2 -> example.com/a2

Example Apache configuration for phpmyadmin:
Alias /phpmyadmin/ "path/to/applications/phpmyadmin/htdocs/"