hi Daud Lell,
First you have to create an association with your employee entity and Account Entity.
Then as shown in the Learning path go to Employee Edit page and Add a dataview with Association Employee_Account.
point 1: Double click the Name Text box and change the label to UserName.
Point 2 : Double click the User Role Reference Set selector, and in the attrbute path select the following:
Point 3:Right click on the User role selector and select generate page and follow the instruction to give the name and the layout selection.
Hope this helps!!!!