re the cerebellum – see the labeling folder which has the suit atlas and the yeo cerebellar functional zones atlas.
You can try to use ea_labeling2atlas(‘Cerebellum_SUIT (Diedrichsen 2006)’) to convert the labeling into an atlas – but I’m not 100% sure if it will work. If not need to do manually (just put nifti files in the folders, ignore the atlas_index.mat and gm.nii files that will be built automatically.
Re toolboxes I think you need stats & machinelearning as well as image processing optimally. Most things should work without but some functions need them.