make arrangements for

make arrangements

To organize, plan, or prepare. Typically followed by "for (someone or something)" or "to (do something)." I will make arrangements for you two to meet this week. We're making arrangements to have the faulty equipment repaired next week. Please make arrangements for my sister. She'll be arriving in the morning.
See also: arrangement, make
Farlex Dictionary of Idioms.

make arrangements for someone

to plan accommodations for someone. John is coming for a visit next week. Please make arrangements for him at the hotel. I will make arrangements for everyone when I call the hotel.
See also: arrangement, make
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

make arrangements for

Plan or prepare for someone or something, as in Who is making all the arrangements for our sales meeting? This expression employs arrangements in the sense of "measures or preparations for a particular purpose," a usage dating from the late 1700s.
See also: arrangement, make
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • arrangement
  • make arrangements
  • make arrangements to do
  • make the arrangements
  • put (one's) affairs in order
  • plan ahead
  • plan on
  • have strings attached
  • jungled
  • jungled up