Mikrotik RB493G + Unifi AP, public and guest network

1. Go to Unifi Controller Web page, sign in.
2. Open settings => Wireless Networks => Create

3. Select Security: Open, tick Guest Policy checkbox,
tick Use VLAN ID and for example put 200 for VLAN ID, click Create
4. Now open WinBox for Mikrotik setup

for my simple setup i've created bridge bridge1 for LAN, with this parameters:

 0  R name="bridge1" mtu=1500 l2mtu=1520 arp=enabled 
      mac-address=00:0C:42:A7:68:EC protocol-mode=none priority=0x8000 
      auto-mac=yes admin-mac=00:00:00:00:00:00 max-message-age=20s 
      forward-delay=15s transmit-hold-count=6 ageing-time=5m