Single Instance of Akaunting with Multiple Subdomains

I have installed Akaunting on my hosting machine with domain e.g "example.com" . Everything is working just fine. Now I want to create Subdomain e.g "sub.example.com" and point its DocumentRoot directory to my main domain "example.com".

Is it possible and how can I do it? I want both domains have their own sessions so they not conflict at any point and also install Akaunting Modules so they don't conflict as well.

Unfortunately, that's not possible.