Question about credentials

Hello,
i am new to the Remote Desktop Manager and want to use it in ours company network to simplifiy the connection sessions of some collegues. I already upgraded to the enterprise edition and i am using SQL server in an active directory enviroment to depolythe data base. The data base contains all the server connections for the collegues, but i´ve got a question:
When opening a session, it is always necessary to type in the account name and the password of the specific user. How is it possible to save these login information for an instant and easy session opening? I looked at the settings for Credentials and I dont know what is the difference between "Session specific credentials", "Credentials repository"´and "Embedded credential entry".
My aim is the following : The clients just have to log in into the domain on a local machine and install remote desktop manager. In the next step the clients import the data base with all connections and can use these sessions just by double-clicking on the connection. So is it possible to use the domain login information from the local windows 7 machine,for a login with the servers WITHOUT always typing in the domain login information ? I dont want to configure the credentials for every single user in the active directory.

I hope you understand my question. Thanks for answers.