As admin activate the developer mode in order to get access to the technical features (Odoo 9.0), then go to "Settings/User".

Hello Kundan
Create your own group and please don't provide any base group try to selecting your defined group and give access rights accordingly for that specific group. Ex:

<record model="res.groups" id="group_accounting_manager">

<field name="name">AccountingManager</field>

</record>

AccountingManager You need to create above code in security.xml file where you decelare your new group Also need to create a new csv file giving access rights for that specific object. ex: id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink access_account_account_group_account_manager,access.account.account.group.account.manager,account.model_account_account,module_name.group_accounting_manager,1,1,1,1

thanks Ermin , i went in setting and then in user i create four department like- Admin ,Receptionist,Hr and account .after that  all receive a message for create user id password after this creation they can access all department module like inside sales and crm but i want to give perosnal access rights like only accountants or data entrty for receptionist so can you explain me this thing with example because i am begineer