No, Manipal group doesnt accept donations or have management seats.
However, they might offer you vacated seats in the only branch that has the least number of enrolled students in it after the counselling and thats it, they wont even take any donations for this too.
This is one of the things that i appreciate in this group and sets it apart from other so called groups like VIT & SRM.
Whatever subject you are studying in this group especially engineering is bcoz of what you scored or failed to score in the manipal enterance test