When you press the blue keypad symbol in the lower, higher corner, the keypad folds out. However, to fold it back in, one has to move the mouse pointer up to the minus sign in the upper higher corner of the keypad, which is greyed out and hard to find. To make it easy to quickly fold out the keypad to make a call, and fold it back in quickly, the keypad should be folded in and out using a single button located in the same place in the lower upper corner.