Split Confusion

[Leak, Thomas B]

Hi.  I am new to GnuCash and need a little newbie help.  I want to enter a transaction from Target for $140.  $40 of the transaction is Expenses:Clothing and the rest is Expenses:Groceries.  In other apps, you would enter the entire amount and then hit a split button that would allow you to allocate the expense into the correct categories insuring that the splits add up to the grand total.  The grand total would just come out of the checking account balance.  How can I do this in GnuCash?
 
It looks like it wants me to enter a deposit and withdrawal.  Sorry, I am confused.