If you're wondering what the values represent, by default Collins will use the 'value' (average spend per head) entered in your booking types. Then if a payment, pre-order and/or minimum spend is entered, Collins will take whichever is the highest amount. If after the booking you enter an Actual Spend, it will take that.
As well as comparing the dates there are also the options to:
Exclude walk-ins - This will filter out any bookings with the 'walk-in' option ticked and thus considered to be a walk-in.
Exclude auto-confirm bookings - Any auto-confirm bookings received will be filtered out.
Venue Tags- This allows you to filter down the report by venue tags, if you’ve set these up.