tvheadend & hauppauge dvb-t recognize but how make a scan of channel

Thank you for your work

I installed on my RPI 2: OSMC with tvheadend 3.9 server.
I try to configure my usb key dual tuner dvb-t Hauppauge.

I installed the driver from my USB key and it is recognized with this procedure

Wget http://linuxtv.org/downloads/firmware/dvb-usb-dib0700-1.20.fw sudo cp dvb-usb-dib0700-1.20.fw /lib/firmware

But I can not find how make auto scann to find all channels.

Can you help me
Thank you
Samquad

Tvheadend