I'm using odoo 12. and i have installed Employee module. now i created tree new employees then i assigned first employee as a manager and remaining two as a normal. this all employees are user also. now when i login as a normal user and then create a new lead by CRM. that means when i login first user that time i can see the the second user's data because i assigned to him as a manager. but when i login as a manager that time i can't see the other user's data. i want to see their data so what default permission i can assigned and see this data. 

Suggest me.