Multiple SSID's on raspberry pi 3

[silvercenturion42]

Hello, I am currently working on a gNMI related project and am having trouble with running a sample ap configuration in the demo folder, ap_config_1r.json. After looking up the issue, I realized that the raspberry pi 3 I am working with does not support multiple AP's after running "iw list" (not iwlist) in the terminal. I looked at the line that specified that interface combinations with the embedded wireless interface is not possible. Additionally, when commented out the guest-link022 AP and running the auth-link022 AP, the specified username and password provided in the demo instructions does not work. Can you please help me?