Process In & Processing?

ok, so im slightly confused and making sure of something before I go in on the wrong day.

Under the "My Job" tab on my employment page, I go down and see i'm suppose to 'process in' on 5/15, but when I go the schedule/training page I see 'processing' on 5/16 so i was wondering was this the same thing or different?

5/15 is the day u are to be there to process,the other is the date for training.