D-Link AC1200 Mesh User Manual page 25

Section 3 - Configuration
Your changes will be saved and the extender will reboot.
Devices may be connected to the new wireless extension network(s) once the
extender successfully reboots.
Click OK to exit the Setup Wizard. You will be redirected to the log in page.
You can now place the DAP-1610 in a location in between your router and where
you need a stronger signal.
D-Link DAP-1610 User Manual 22