You shouldn't have to ask them, they get an email immediately after you place the bid... it might take a couple days for some of the managers to get around to it, no worries they will.
As a side note, if a computer you are using is near your managers office... go in and bid for a bunch of jobs all at once(even if your not going anywhere...) he/she might freak out and panic or celebrate because you are leaving... then withdraw your bids and have a good laugh... even better yet, get almost the whole station/workgroup to bid like they are leaving the station..