Hotspot with another gateway

**Hi,

Pleas help

i have project this is the description:
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  • 2 SSID with different Vlans (Vlan 10: Guest/ Vlan 11: Employee)
  • Vlan 10 (Range ip: 10.10.9.x/24)
  • Vlan 11 (Range ip: 10.10.12.x/24)
  • Mikrotik IP (Guest Side; 10.255.255.5/24) NB: there is route between 10.255.255.x and 10.10.9.x (i can ping when I’m guest to 10.255.255.5)
  • There is DHCP Server on Guest Vlan who give range of ip with gateway 10.10.9.9

    What i need is to install hotspot on this network,
    how can mikrotik speak with the DHCP server to make get mikrotik username and password


    Please Help
    Thank You in advance**