Hi experts,
I got a requirement like an employee can only able to search for his/her created opportunities but not visible to other employees. Emp's superiors can search for the same but this option should not be available for her fellow employees. A message should be displayed as 'you are not authorized to view other's opportunities'.
Here, other sales org. superiors also should not see the result.
How it can be done through coding..as there is no proper org.structure maintained.
Please, provide me any inputs..! A reply at your earliest convenience would be much appreciated..! 
Thanks,
Bhanu
.