Hi,
So if we start from Quick Setup and the default configuration:
If you need Wi-Fi in a huge building with all kinds of obstacles, simply add more Audience devices to your network – with a press of a button they will sync seamlessly and create a single Wi-Fi network to cover the whole premises. The initial setup is also very simple – download the iOS or Android MikroTik app, it will connect to the router and guide you through a quick setup process.
https://mikrotik.com/product/audience
Have you started like this on one unit, or have you done something different?