php - Can you use RBAC to set individual permissions for each group? -

i have been investigating best method create complex permission based system , using yii2 framework , noticed includes rbac support, not sure if right situation.

what looking guess similar forum system use can make groups , can select permissions each of groups allowed do.

i have noticed rbac add roles , if add , admin , author example can add author child of admin , admin can authors can + whatever other permissions give them.

do have or can permissions separately? adding author child of admin quicker/cleaner way give admin same permissions lower level group has , can add permissions on top?

i worry doing way though because if remove permission author, of sudden admin lose permission unless gain child or given separately.

can still utilise rbac needs or should @ doing custom?

the rbac system of yii2 powerful, can effectly add yor group pemission parent , later if need revoke single permission the child group can add need when , how need.