Connecting 2 Devices to 1 Monitor

[ALazer27]

I have a monitor that has one VGA port. I currently have my pc connected to the monitor and I am planning to soon plug in a PS4 to the monitor. I have a VGA-HDMI adapter so I can attach a VGA port to the PS4 with no issue. I was just wondering what I would need to be able to allow two input signals to enter the monitor through one VGA port?

 

[TurboCooler]

Search Amazon for "USB VGA Combo switch with push button" That will allow two devices to work with a single VGA port.