Beneath Name you fill out the parameters used for adding username and password. These should be connected with the value $user (username) and $password (password) in SiteVision.
Click on the + sign to add a parameter. An empty white row is added where you type the name and the value of the parameter.
In order to find out the name on these parameters you can right click on the login form for the application you link to and choose source. In the HTML code you look for <FORM> and there you usually find the name of these parameters.
Beneath <FORM> and the attribute ACTION you will also find the address to add under the tab General beneath Source.