You can group time that is in the drawer by choosing either "group time by services" or "don't group time". Once you have pulled your drawer items into the invoice you can no longer chose wether to group or not without deleting the invoice and starting back over. the problem is you cannot group any of your other expences. and as a construction contractor I generally group my time, so that only takes up a couple lines, and then several pages of materials. that is where the problem is.