Thank you for your answer, but i mean all user can see all records include all other user records, but they only READ cannot edit.

User can EDIT only their own records.

Hi,

You can set the non editable users permission as "Own Documents Only" in sales application, so that this group of users will see only those records in which they are sales person.

If you need further you have to adjust the existing record rules in the db and make the needed adjustments.

Thanks