Enable a hierarchical list
You can enable hierarchical lists to make data from related lists directly accessible from within a v2 list.
始める前に
このタスクについて
Hierarchical lists enable a user to view the contents of the related lists of a record without leaving the record list form.
注:
You cannot enable a hierarchical list view for an embedded list. Hierarchical
lists are not supported in List v3, even if they are enabled.