if you have crafted the login pages with Security Assist there should be a session variable that is created to hold the id of the currently logged in person. You can depend on this id being there for any inserts or updates. So if a user were logged in their id would be in this session variable. You could then use this session variable anywhere that you need to reference the id of the currently logged in user. In the example of adding clients you would want to have a column in your clients table that would hold the id of the sales person that client relates to. When you are setting up the insert server behavior for the clients you would specify the session variable that holds the id for the sales person id column.
