Need access of child's lead and SO in sales person tree

[sachin1]

I have created sales person tree under sales team. and created child under sales person. Now i want to give access to sales person that sales person can see all lead and details related to selling of its child.

[root13F]

I answered a similar query here regarding Sales Orders :

Sales Person Wise Sales Order Read/Write Permission

here’s an example of how to use permission query feature: