1
general::
Phrase(s): settle on something
to decide on something. • We’ve discussed the merits of all of them, and we’ve settled on this one. • I can’t settle on one or the other, so I’ll buy both.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Also, settle upon. 1. Decide something, as in They finally settled on Bermuda for their vacation. [Second half of 1700s] 2. Give property or a title to someone, as in She settled an annuity on her husband. [Mid-1600s]
American Heritage Idioms