Edimax Technology VO-4500SK V2.0 user manual Assign Speed-Dial Number, ：

2.4 Assign Speed-Dial Number

Step 1：

From the main Skype window, select the Contact tab.

Step 2：

Right-click on a contact name then Select “Assign Speed-Dial”.

Step 3：

In the next window, enter a speed-dial number, then click “OK”.