Several members of the AA'3Mn4O12 quadruple perovskite family have now been realised, and are known to support intricate charge, orbital, and magnetic ordering phenomena. In particular NaMn7O12 develops commensurate magnetic and orbital order, as in the well-known compound La0.5Ca0.5MnO3, whereas CaMn7O12 exhibits a more exotic incommensurate magneto-orbital helix. We have grown for the first time NaxCa1-xMn7O12 compounds with x=0.25, 0.5, and 0.75. These compounds may realise magnetic structures that bridge the gap between exotic magneto-orbital helices and the well established collinear, commensurate order. Here we propose a continuation WISH experiment, based upon successful measurements recently made on the x=0.5 sample, to solve the magnetic structures of the x=0.25 and x=0.75 compounds with the primary aim of understanding the full NaxCa1-xMn7O12 phase diagram.