Sophos sg-230 UTM 9 HA(Active-Passive) Licensing and Setup

Hello,

I would like to create an HA Active-Passive between 2 Sophos Sg-230.

Right now I have only one sophos SG-230 with network Protection Licence, Also its firmware is 9.600-5

I bought a second SG-230 and I want to configure it as a Slave on the HA

I follow the above instructions of the above link

https://techbast.com/2015/04/configuring-high-availability-ha-on-sophos-utm.html

And I have configured only the Master node.

So right now I have to configure the Slave node and I'm confused.

What I should select in the HA menu of the second node? I have the options auto-configuration and active-passive ha ?

I'm afraid if I connect the second node it will be become as a master and my old sophos lose its configuration.

Also the new sophos I haven't install any licence I thought the licence of the Master Node will be transferred when the HA will finish syncing.

Also the new sophos has an older firmware 9.311 I tried to update it with Up2Date but nothing is happening, in the dashboard it finds that updates should be installed but when I click on it in the Up2Date page it shows that sophos is up to date.

So I was wondering if I select in the high availability in menu Hot-Standby(active-passive)

and I fill the Device Name with a name, the Node id  with 2, the encryption key with the key that I gave in node1 and I check enable automatic configuration of new devices and finally connect them with a cross cable, 

I will be fine? The node 2 will be the slave of the HA and then it will sync configuration licence and firmware from the master?

or I have to do something else?