How to set a range of IP addresses on USG interface?

Zyxel_Emily

Scenario: 
My ISP provided me a range of public IP addresses. (10 public IP addresses)

I would like to set these IP addresses on USG, but USG only supports up to 4 virtual interfaces. How can I set that on USG? I would like to publish 10 servers to the Internet.

Configuration: 

If ISP provided a range of IP addresses, you can only use one of the IP addresses to manage USG. The others IP address are used for publishing your servers to the Internet.

You can use "NAT" function for publishing internal servers.

If NAT function is used, then creating virtual interface is unnecessary.

External users are still able to access internal servers without problem.