Formula for Automatic Regrouping of Items by Category

For accounting purposes, household expenses are recorded in the following columns:

• Date
• Description
• Sum Paid
• Category

I would like to be able to have another table on the side, where all the entries are restructured in the following table:

	CATEGORY-A	TOTAL SUM PAID FOR CATEGORY-A ITEMS
Date Item A1	Description Item A1	Sum Paid Item A1
Date Item A2	Description Item A2	Sum Paid Item A2
(blank row)	(blank row)	(blank row)
	CATEGORY-B	TOTAL SUM PAID FOR CATEGORY-B ITEMS
Date Item B1	Description Item B1	Sum Paid Item B1
Date Item B2	Description Item B2	Sum Paid Item B2
(blank row)	(blank row)	(blank row)
	CATEGORY-C	TOTAL SUM PAID FOR CATEGORY-C ITEMS
Date Item C1	Description Item C1	Sum Paid Item C1
Date Item C2	Description Item C2	Sum Paid Item C2
(blank row)	(blank row)	(blank row)

Could you help me with the correct way to go about it?

Sorry, this is a Google Sheets question (hence the forum section selected).

What would be the best way to provide an example in this case?

I added an example data sheet here: docs.google.com/spreadsheets/d/1iLmRFqgAfLSOh7Ygq61By-YbiqFRCpYUnOjfKsEbSK4 (the forum doesn't allow me to post links apparently). Please let me know if this helps.