Setting LAN, WIFI and Guest

Dear All,

I hope I post this in the correct forum. First, I am a total newbie using Mikrotik system. I had setup my previous network using DSL modem, toughswitches, unifi APs and have 2 networks (management and guest) setup according to this https://help.ubnt.com/hc/en-us/articles/205146150-UniFi-VLAN-switch-configuration. Everything works fine until I upgraded DSL to Fiber optic. I had to replace modem to ONT and my ubiquiti router to mikrotik RB2011. Since I have no experience in mikrotik, I hired a network guy from the local internet company to setup my network. His setup is marked red in the diagram. A problem with this kind of setup is that I have a laptop connected to management wifi with subnet 192.168.9.x, and a network kitchen printer connected to LAN with subnet 192.168.1.x. I can’t seem to be able to print to this printer from that laptop even though I could ping the printer. I think he had set up NAT to communicate between different subnets.

What I want is in black which is only 2 DHCP servers (192.168.1.x for management LAN and wifi and 192.168.8.x for guest wifi). The network guy said that can’t be done for some unknown reason. Therefore, I plan to take over and hope you guys willing to point me to a correct direction on how to do this. Thank you in advance.
Network.jpg

You can have multiple DHCP servers as long as they’re on different interfaces not belonging to the same L2 segment, no problem.

Edit: Thank you for the response, I think I got it.