In Headquarters, go to Retail and Commerce > Channels > Channel deployment.
On the Channel deployment page, select the Registers tile.
On the Registers page, select a store register.
Select a register by selecting the register number in the Register number column.
On the page for the register, under General, verify that the Support offline option is set to No.
Download the Modern POS installer
-On the Welcome page, use the menu in the upper left to go to Retail and Commerce > Channels > Channel deployment.
-On the Channel deployment page, select the Devices tile.
-Select a device.
Select Download, and then select Configuration file.
On the Notification bar that appears at the bottom of the Internet Explorer window, select Save. (The Notification bar might appear in a different place in other browsers.)
Select Download, and then select Retail Modern POS.
On the Notification bar that appears at the bottom of the Internet Explorer window, select Save. (The Notification bar might appear in a different place in other browsers.)
After the setup installer has been saved, on the Notification bar, select Run. (This step might differ, depending on your browser.)