How the role's official reload label is set as a sub-label for this role

jetavie:_daybreak_(mischievous_wings)_(pgr) is a sub-tag of jetavie:_daybreak_(pgr). What can I do to set it as a sub-tag.
Such as pictures.

that's an implication, which makes it so adding one tag always adds the other tag. you can read more about requesting implications and other kinds of tag relationships here: help:bulk update requests.