You can see tips and tricks for Miss Management at:http://www.gamezebo.com/2007/07/miss_man…
Gamezebo is a cool site for reviews and tips for these types of games!
Here’s a copy and paste from that site for their Level 30 walkthrough:
“Day One- Leave Brooke at her desk all day without moving. Leave everybody at their desk, except occasionally move Mahivir to the couch so he can relax. Space the work out evenly. If you’re short on money buy donuts instead of cinnabuns, it will keep more people happy. At the end of this day Brooke’s task of not doing anything for the whole day will be complete. You should also have less money to earn towards your $125.
Day Two-Let Brooke do a little work first, as soon as her first sign of stress shows up let her go sit on the couch for as long as she can. You will not be able to complete the whole 200 seconds on this day, you will have to do it on the next one. Let Mahavir stress out while Brooke is on the couch. Mahavir doesn’t like it when people are on the couch so thus it will be too hard to keep him happy.
Day Three-Finish earning the money and let Mahavir stress out so that Brooke can complete her 200 seconds on the couch. (But let her go back to work temporarily if work starts to pile up.)
Day Four-Let Brooke finish on the couch. Some employees will stress out, let them. Brooke’s goal does not require that nobody stresses out.
Day Five-Brooke should be finished on the couch. Let Brooke stress out and then turn on the radio on and the air conditioner. Spread the work out. Don’t give Nadine too much, she may look like she’s about to stress out but she will not because the air conditioner will keep her from doing that.
Day Six-Let Brooke finish earning the money, if you still need to. Leave Winston by the watercooler so he chat with Denise. (Follow steps in day 28 “Easiest” Day Four in order to achieve this.
Day Seven-Let Winston and Denise finish talking by the watercooler.”
Good luck and have fun!