Sorting sets of rows based on cell

I need to get Excel to sort data, grouped into 4-row sets, based on a single cell in each 4-row set. Each set of 4 rows must stay grouped together when sorted (the cell that will determine the order is the designator for each set of data, basically just sequential numbers).

If I use the standard methods which I am familiar with (such as the AutoFilter or Sort tools), it sorts each row that contains the cell I need, leaving the rest unsorted after the x number of cells have been sorted.

Any thoughts? I don't know where to begin with the code, and the help pages I am finding just use AutoFilter.