Two different network - emplyeres and hotspot

I have 3 AccesPoint TL-WA901ND Tplink. I would like for all of them to do two different networks. One for employees and another hotspot. Please, instructions, how I can do?
Now I have rb1100ah, and ether1 is port WAN
then
ether 2, 3, 4, 5 have occupied.

Next free port is 6-10.

Hello, the best way is to use VLAN, the AP you create the SSID to a VLAN ID for employees and other SSID with another VLAN ID to visitors. Thus in Mikrotik you create the VLAN uses the same VLAN ID and assigns different IP ranges for these network. Now you treat differently each to enter the Wireless.

I’m not sure on the three Access Point VLAN will work if it is connected with one unmanaged switch.
Illustrative image at
http://goo.gl/spFlc8

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