I have one unit cell of 16 atoms (4 formula unit cells) 2x2x2 unit cells. I want to construct the supercell with 32 and 64 atoms. I went in the transform and I changed the rotation matrix 4x2x2 and 4x4x2 respectively the Vesta. But my space group remains the same after transformation. I guess it should changes because I check one another input file (not constructed by me) in which space group changes. I need some suggestions about it. I constructed the 16 atoms input file using space group and Wyckoff position, and then I am trying to make supercell from it using Vesta.