by instalments(Determination (civil): If the defendant offers to pay to the claimant an amount by instalments and the claimant refuses the offer, an officer of the court will make an assessment of what would be reasonable for the defendant to pay. LT Alexander Demidov); piece meal
someone's province(I'm afraid ballistics is not my province4uzhoj); someone's department(Well, that's interesting, but that's not my departmentbellb1rd)
be one for something(I’m not one for parties. – Вечеринки – это не по моей части.Abysslooker); up someone's alley(в значении: соответствует чьим-либо интересам, способностям igisheva)
