After logging in your Erply account, enable the Customer Display plugin.
For enabling the Customer Display Plugin, navigate to Settings -> Plugins -> Customer display and activate the setting.
Write your Channel Name.
Note: If there is no channel name here, go to Configure Plugin and click on Generate Channel Code.
Activate Second Display for Customer Display
The settings menu will appear if you drag the menu from the left to the right. Under the Sunmi Customer display section, select Open Customer display.
In the window that opens, please put your channel name and then Click On Switch Channel and then OK.
Press the Back button on the screen.
In the settings menu, select Show customer display for each screen.