Power Query - Filtering rows and adding a column for subtotals based on two columns

Data:

Each 'Code' has multiple 'Amount' in a month. E.g. 1001 has two entries of 10 and 20 on 31st January.

Requirement:

I want to make my data unique on the basis of 'Code' and 'Date' so that each 'Code' has one entry for each 'Date' and the 'Amount' is totalled up into a new column 'SubTotal'

I need to do this in Power Query.

Thank you!