с кем-л о чём-л to agree with sb on/upon sth or to do sth, to arrange with sb about sth or to do sth; to settle to do sth; назначать время, место to appoint
мы усло́вились встре́титься в кафе́ в 6 — we agreed/arranged to meet in the cafe at 6, we are/were to meet in the cafe at 6