I'm curious what the difference is when reserving DHCP addresses between doing it in Security - DHCP versus just finding the clients in the event log and then clicking the radio button to assign IP address there. It seems like if you reserved an IP in the client list it would show up in DHCP settings under security tab, but it doesn't.
I don’t think it matters. I do this from the client page most often because it seems easier. I have always seen the reservations show up in the DHCP settings later. I think you will too, but it may take a few minutes?
As Brandon mentioned, I'm pretty sure it's the same thing. I assigned a fixed IP to a device from the Client list the other day and it does show in the list of fixed assignments under Security and SD-WAN > DHCP.