DRTLS Manager in android studio

New programmer here,

There are some alterations I would like to make in the android application source code.
As I am relatively new to android programming, I was wondering if there is any documentation available on importing the source code into an IDE, preferably Android Studio.

Maybe someone can help me along? I have decent programming experience, but I am relatively new to Android.

Thank you in advance.

Kind regards, Lori