ubuntu - Bind Slave Server Notify after adding new zone

I am new to DNS Setup, i have recently setup DNS server Master and Slave using bind9. Here is my config...

Master DNS - ns1.example.com. - 192.0.2.1
Slave DNS - ns2.example.com. - 192.0.2.2

named.conf.options

options {
        directory "/var/cache/bind";
        recursion no;
        allow-transfer { none; };

        dnssec-validation auto;


        auth-nxdomain no;    # conform to RFC1035
        listen-on-v6 { any; };
};

named.conf.local

zone "example.com" {
    type master;
    file "/etc/bind/zones/db.example.com";

    allow-transfer { 192.0.2.2; };
};

Slave named.conf.local

zone "example.com" {
    type slave;
    file "db.example.com";
    masters { 192.0.2.1; };

};

This setup works perfect, but now i want to add another domain. So should i only update named.conf.local at master Sever and DNS server would be notified automatically...

For example...

zone "example2.com" {
    type master;
    file "/etc/bind/zones/db.example.com";

    allow-transfer { 192.0.2.2; };
};

I am really confused with this, please suggest next step when i add more domains zones. Thank You.