I found a problem when trying to enter a leave allowance for another user. I was getting an error trying to navigate from the start date to the first leave field that said there was already an allowance for me for the year. There wasn't, and in looking at the code it did a DBLookup to the 6th column of the (All Leave Allowances) view, where it looks like it expected to find the Name+Year value. That value was stored in the 1st column, so I updated the value to check the new column and it's working now.
Looks like a great app - I've got one group very excited about using it, after that, we'll hopefully move it out to more people!