To use different network adapter for each virtual machine:
1. From the Workstation 10.x menu click on Edit > Virtual Network Editor
2. Click on Add Network... > VMnet2 through VMnet19 and configure them to be on Bridged and Bridged to specific network adapter on the host
3. Now go back to the virtual machine and select Edit virtual machine settings > Network Adapter > Custom (and specific the newly created VMnet's as per requirement)
I have tried that but it didn't work.
I added vmnet2 and bridged it to the 4-port NIC(Realtek_Quad_NIC). Added vmnet3 but the Realtek_Quad_NIC adapter was not available for bridging(probably because it's being used by vmnet2). I want each vmnet to use only one of the 4 ports of the adapter. So if all goes wel, I'll end up bridging vmnet2 to Realtek_Quad_NIC_port_01, vmnet3 to Realtek_Quad_NIC_port_02, vmnet4 to Realtek_Quad_NIC_port_03, vmnet5 to Realtek_Quad_NIC_port_04.