'Required' in the Bible

Now some of them were in charge of the serving utensils, being required to count them when they brought them in or took them out.

So David left Asaph and his relatives there before the ark of the covenant of the Lord to minister before the ark continually, as each day’s work required;

and with the showbread, and the fine flour for a grain offering, and unleavened wafers, or what is baked in the pan or what is well-mixed, and all measures of volume and size [as the Law of Moses required].