I have 2 users one is Sales Order person and second is Sales Invoice person.

 My scenario for role right is given below,

 Sales Order Person :- sales person can work on quotation and sales order forms only. Invoicing do not show to this                                                 person.

 Sales Invoice Person :- Sales Invoice Person can work on Invoice form only. sales Order and Quotation do not show to this                                               person.

 please guide me how I can achieve this by grouping.