SPHERE/IRDIS images of the three multiple systems, centered on the primary stars. Each column shows one system, namely CHX 22, S CrA, and HP Cha. Top row: total intensity images. Middle row: polarized intensity images. Bottom row: Processed PI images for better visualization of the features. The PI image of CHX 22 was smoothed through convolution with a Gaussian kernel with a width of 2 pixels, revealing the dust tail clearly. The PI image of S CrA was high-pass filtered by subtracting the Gaussian smoothed image from the original image, to highlight the potential ring (red dotted ellipse) and spiral features (orange dashed curves). The PI image of HP Cha was also Gaussian smoothed. In the colorbars we show the scaling of the figures in arbitrary units to indicate the significance of the various detected structures. For a flux calibrated version of the polarimetric observations, we refer to Appendix E.