Dear aspirant
Yes the Sankalp building is main building of Allen Career Institute for all official works like admission and any further details you can go to Allen Sankalp ground floor . No other classes are concerned in Sankalp building the classes are only for engineering students for medical and have so many buildings in entire Kota City like Samarth ,Samyak, savinay,safalya satyarth. out of these Samarth building is the biggest I have ever seen for medical students .
it consists of a auditorium hall.
all ventilated classes good benches.
Apart from this Sabal  is also for engineering  students
For more details you can visit to the official website of Allen Career Institute for admission regarding medical coaching
Hope It helps