I'm refining a protein structure with a resolution of 1.25 A, using Phenix GUI version 1.9. I am refining the B-factors for the protein atoms anisotropic and those for the water molecules isotropic. How can I restrain the anisotropic B-factors so that
bonded atoms have similar ellipsoids (like the SIMU and DELU commands in Shelx making the atoms moving similarly in direction and amount)?