Currently no. You will need to create a new expense for the each of the catagories you want to add. Here is an example:
Hotel bill is $340 from Marriott and showed up on your credit card. You also had a $10 parking and $40 meal.
1) Change the amount on the Marriott expense (Catagory Hotel) to $290
2) Add a new transaction Marriott Parking for $10
3) Add a new transactions Marriott Meals for $40