How did Jesus send out the Twelve in Mark 6?

Answer: Two by two

Jesus sent them out two by two with authority over unclean spirits, taking nothing for the journey but a staff.

“Then Jesus called the Twelve to Him and began to send them out two by two, giving them authority over unclean spirits. He instructed them to take nothing but a staff for the journey—no bread, no bag, no money in their belts—”— Mark 6:7-8 (BSB)