Don't forget DFEND - Dosbox Front-End
No it doesn't add anything. Yes it makes the whole process easier. Here I'll even find it for you
http://members.home.nl/mabus/dfend.htm
Enjoy. I used this to run XCOM 2 last week. Particularly, pay attention to the "Cycles", as this is how fast the game will run. A 'recent' old game like XCOM 2 might need 19,000, while a dosbox game might just need the 2,000 or whatever it starts on.