Provided info given is correct, this is the setup for your box.
Connect to a live VM feed, Menu - Installation - Channels Search -,
Satellite = Tuner 2, some may show Terrestrial (depends on software)
Scan Mode = Power Scan, a Auto scan is only needed there on in unless searching for a new TP.
Frequency No need to touch
Symbol Rate = 6887
QAM Size = 64/256, both scanned at same time. use right/left arrow to change to QAM 64,QAM 256
Step = Default is set to 8.0 if TP are missing the step can be lowered.
Press red button to scan from a direct feed, no splitter is advised. like Sky channels are not in order.
QAM - 64/265 both are used at the same time, not separate scans