plan for someone
to prepare enough [of something] for someone. Fred just called and said he can show up for dinner after all. Please plan for him. Tony wasn't planned for, and there is no place for him to sit.
plan for something
1. to prepare for something. I need to take some time and plan for my retirement. We carefully planned for almost every possibility.
2. to prepare or estimate for a certain number [of people or things]. I am planning for twelve. I hope everyone can come.