0 to formally establish a new company, organization, system, way of working, etc.: --
1 to prepare something for use, especially by putting the different parts of it together: --
2 to formally establish a new company, organization, system, way of working, etc.: --
3 to arrange for an event or activity to happen: --
I'll set up an appointment.
set up a meeting
I managed to set up an appointment for her to see a psychologist.
I set up my business in 1995.