Conference calling is a feature of Skype that allows you to talk to more than one person at a time. Here's how to make a three-way call on Skype:
Open your Skype software on your computer via your Skype desktop icon or your Start menu.
Log in to Skype with your user name and password.
Click the "Conference" button, which is at the very top of the window. Alternatively, you can go to "Tools" then "Create a Conference Call."
Enter the topic of your conference call conversation at the top of the new window that opens up.
Invite the two contacts to your conference call. Select them from your list of contacts on the left side of the open window and click "Add" to add them to the call. Alternatively, you can press "Ctrl" (control) to select both names at the same time, and then add them. As you add each contact, you will see the names appear in the "Conference Participants" list on the right side of your screen.
Click the "Start" button when you have all your desired contact names in the "Conference Participants" list. Doing so will call both contacts at the same time. You will see a conference tab with the names of the participants being added as they join. This may take a few moments.
Use any of Skype's other regular features during your conference call, just as you would during a regular call. For example, you can click both of your contacts' icons to view their profiles. Or right-click them to access advanced options, such as Hang Up, Start Chat, Mute, Hold and Send File.
Click the big red button to end the conference call, which will cut off all connections with both contacts and yourself. If you hit the button by accident before the call is done, a window will pop up asking you if you are sure you want to end the call.
Skype's conference calling feature allows you to add up to four contacts to your Conference Participants list (for a total of five participants, including yourself). For those who have an Intel Core 2 Duo Processor, you and nine other contacts can participate in a Skype-based conference call. You can add an additional participant to your conference call even while you're in the middle of the call. Just select the contact from your contacts list and click the conference toolbar button--or right-click the contact name--and select "Add to Conference."