How can I add a physical interface to LAN1?

[iglonius]

I am trying to remove the settings for LAN2 interface and then add it to LAN1 but LAN2 is physical interface and it cannot be deleted, only disabled. To put it another way; I would like to have port 1 and port 2 in LAN1 but I cannot figure out how to do it.

[Dave_Hall]

Depending on the firmware version and mode the ports are in, just remove all references to the port in question (usually a firewall policy(ies), firewall object references, DHCP setting).  After this, you should be able to add the port to another soft/hardware switch.  If this info is not helping, I suggest posting a screenshot of your interface/port settings, etc.