If you are thinking to connect another dish antenna with the same set-top box then you should read this post about using DiSEqC Switch 2×1 till the end.

According to your image, you want to search Ku-band LNB2 and c-Band LNB1 by using 2 port DiSEqC Switch 2×1.
Please follow the given steps… after connecting all the jumper cables as above picture.
Step:1
Go to Satellite List and Tick or create any two Satellite Names.
Step:2
Now Go to LNB Setting select Satellite Name and enable the below options for This satellite.
Settings for C-Band LNB1 –
LNB Type – Standard
LNB Frequency – 05150
DiSEqC1.0 – LNB1
Polarity – Auto or H/V
22k – on
Mode – FTA
Save the settings and exit from the antenna settings.
Step:3
Now create or select another satellite in the dish antenna setting.
Settings for Ku-Band LNB 2:
LNB Type – Universal
LNB Frequency – 09750-10600
DiSEqC1.0 – LNB2
Polarity – Auto
22k – off
Mode – FTA
Save the settings and exit from the antenna settings.
Now you can go to the scan multi-satellite option and tick both satellites with the blind scan option, mode -FTA only. Wait for 2-3 minutes to scan all the FTA TV channels from both dish antenna or satellites.
Quick Connection Steps –
Connect LNBs to the DiSEqC switch: Attach the Ku-band LNB to port 1 (or A) and the C-band LNB to port 2 (or B) on the DiSEqC switch.
Connect the DiSEqC switch to the satellite receiver: Link the output of the DiSEqC switch to the satellite input on the receiver using a coaxial cable.
Set the DiSEqC switch: Configure the DiSEqC switch according to the manufacturer’s instructions. Typically, this involves setting the switch to the correct mode (e.g., DiSEqC 1.0 or 1.1) and configuring the LNB settings.
Configure the satellite receiver: Program the satellite receiver to recognize the DiSEqC switch and the connected LNBs. This usually involves setting the receiver to the correct satellite and frequency.
You can find more topics about the DiSEqC switch here. You can compare DiSEqC Switch 2×1 prices from here.
