There are many people working shifts and doing well on alli. I always recommend that people take some time to plan two sets of menus: one for work and one set for off time. That because the size of the meal on work "days" is likely to be different. The first or second is probably the "dinner" while the last is a lighter, breakfast-style as many people tend to go to sleep within a few hours of getting off.
The Sample Menus for your level give a good picture of how to distribute calories and fat throughout the day (night). And they're a nice pattern for how to design your own meals and snacks. It's fine not to use those menus - or recipes - and make your own as long as you stay within your level -- and include a variety of food.
It's very important to plan snacks for both menus. Many people who work shifts tend to snack through the shift, and the change needs to include one full meal and one snack. Often that means talking with co-workers and explaining the importance for 10-minutes, or so, to have a meal.
Like any new activity it may take a week or two to get into the swing of things, and then it will become second nature.
I hope this helps. Please let me know if you need anything else.
Pat Baird, MA, RD, registered dietitian