Each till on your counter is a register with its own name. Name it when you open the session, and pick it on each device.
Step 1. Name the register when you open the session
In the Open Session window, type a name in Register and the Opening Cash. Pick a name you can tell apart, like Front or Counter 2. There is no list of registers to set up: a register is there while its session is open.
Step 2. See which register this screen uses
The register bar at the top shows the register name and the person who opened it. When only one register is open for you, the screen uses it by itself.
Step 3. Choose your register when two are open
If you see Select Register with More than one register is open. Choose which one this device belongs to., pick your register. Each row shows its name and Opened by. This device remembers your choice while that session is open.
Step 4. Or open a new register
To add another till, press Open a New Register in the same window, then fill in the Open Session form.
Step 5. Open a session again
If the register was closed on another device, this screen shows No Active Session. The sales made on it stay on that closed session. Press Open Session to start selling again.
Result
Each till on your counter sells into its own register and closes with its own figures.