How to restrict user to view others Sales quotation?

Hi,

I need to restrict other users to view other quotation. for eg: I should not view other users quotations by changing the employee number in sales quotation form. how to restrict this from security.

am using ax 2009.

Thanks

You can use Record level security in AX 2009.

https://msdn.microsoft.com/en-us/library/aa570084(v=ax.10).aspx