GNS3-Tutorial: Add more port for router

Add more port for router in GNS3:

When you add ISO image in your GNS3 software, each virtual router only have some simple port. Example 1 Ethernet port, 1 Fast Ethernet port..
Some labs request router have at least 2 or 3 or more port. So we must to add some adapter or module into our virtual router.
How to do it? Please view bellow  video! It will help you :)
Please give me your comment to make more useful video. Thanks 

GNS3 - Tutorial: Set IDLE-PC

What exactly is Idle PC value in GNS3?

While simulating your network in GNS3, there is a possibility for 100% CPU usage of your computer. This is due to the Dynamics, the core emulator, doesn't know when the virtual router is idle, or when it’s executing tasks.
Idle PC value calculates the time when the IOS image is idle (not performing any task) and puts the router into an idle state (sleep mode).
Hence it significantly decreases CPU usage on the host without losing the virtual router’s capacity to do real work.
Bellow video will help you set IDLE-PC for virtual router or switch.