It is probably under "Port Forwarding > Forwarding". It will probably ask you for some information like your internal IP address, the protocol, and the ports. Just lookup a guide for it on PortForward.com. They have a guide for virtually every router.
"Oh, I don't have that! I have clear, I guess I'll look up a tutorial for clear portforwarding!"
Here's a photo of what it looks like:
It is probably under "Port Forwarding > Forwarding". It will probably ask you for some information like your internal IP address, the protocol, and the ports. Just lookup a guide for it on PortForward.com. They have a guide for virtually every router.