Set up an object
Drag Tm Hierarchy Explorer from Custom objects to the sheet. Add one dimension for each hierarchy level, up to eight, and one measure for the size. In Data roles, select a mode in Chart type.
Map Level 1 (root), then map each next level. The dropdown for a level shows after you map the level above it. Size is required for Sunburst, Icicle, and Circle packing. Each row of the data is one full path from Level 1 down to the deepest mapped level. Qlik adds the sizes up to the parents.
Dendrogram and Radial dendrogram show the tree structure without a Size measure.