Google is your friend. Do a search on wedding shot lists. This will get you a number of photographer (and other) sites that include a shot list. Take that, change it to meet any expectations you might have or that you think your clients might have. Review and ammend the list after you have visited the location(s). Give your clients that shot list with enough time for them to work it over, but not so much that they loose it or forget about it. Review it with them during the consult that you have a week or three before the event.
Then, make sure your clients understand that you will do everything you can to deliver, but "life does happen" and that you can't control everything.
As for the order of the shots, they need to mirror the progress of the event. Do the setup shots while they are getting ready. Do the posed before or after the ceremony. The ceremony during the ceremony (doh!). Sometimes, you may need to pose some of the ceremony shots, but that should try your best to get the ceremony shots during the ceremony.
For the posed/formals, do it as efficiently as possible. Think about it. For example (and this is only an example, I'm sure there are better ways to do this, but it should work):
- Start with the Bride & MOB (SHOT).
- Add FOB. (SHOT).
- Add siblings. (SHOT).
- Add Bride's extended family (SHOT).
- Add Groom (SHOT).
- Add all grooms extended family (SHOT).
- Peel off Bride's family (SHOT).
- Peel off grooms extended family (SHOT).
- Add brides close family (you now have B&G, and close family of each in the shot) (SHOT).
- Peel off groom's close family, leaving B&G, MOB, FOB, MOG, FOG (SHOT).
- Now, peel off the bride (SHOT).
- Peel off MOB and FOB, leaving just groom and his folks. (SHOT)
- Bring the Bride back in. (SHOT)
Now, do it all over again, but this time, substitue the wedding party for the family. Don't forget about the ring bearer and the flower girls.
The point is, you don't have to worry about getting them taken in a "wedding logical" order. You just need to get them all. Make it easy and time efficient.
Change it up to suit the situation, but this will help to minimize the number of people shifts and the number of times you need to pose each individual. Once someone is in the shot, they really don't move a lot. All you will need to do is slight movements of individuals as they shuffle waiting for all the others to move around.
There might be a better way to move the bride as well. You want to minimize the number of times you have to pose her as getting her gown just right can be a real time consumer.
Edit: OOPS. I ran with this as if it were for a wedding. That's not the OP's question. But, the concept can still be used to get all the "required" shots.