1. Table.SelectRows

Table.SelectRows(#"Previous Step", each [Sales] > 500)

2. Table.RemoveColumns

Table.RemoveColumns(#"Previous Step", {"Column1", "Column2"})

3. Table.AddColumn

Table.AddColumn(#"Previous Step", "NewColumn", each [Sales] * 0.1)

4. Table.RenameColumns

Table.RenameColumns(#"Previous Step", {{"OldColumn", "NewColumn"}})

5. Table.Group

Table.Group(#"Previous Step", {"Category"}, {{"Total Sales", each List.Sum([Sales]), type number}})