It really helps us if you supply the error messages when you receive them.  Right now I am guessing.

However, since I literally just added a Subtotal account to set of books and got the message about accounts not being in a logical order, I am going to assume this is what happened to you.

You need 4 accounts based on your message.

5201 Subgroup Account (A)

5202 Subgroup Account (A)

5203 Subgroup Account (A)

5205 Purchases Total Subgroup Total (S)

I didn't bother to redo the account names as you have them except for the last one.

I am assuming you are getting the error because your Subgroup Total is above the Subgroup accounts (see the area of the Accounts tab of the General Ledger for each account and look for Type).

I fixed my Group accounts and turned them into Subgroup accounts by hitting the tab key in the Chart of Accounts window but you can open each account in the ledger and change it on that dialog.