requiring
v.v. needing something or making it necessary. You use this when a rule, a person, or a situation says that something must happen.
v. needing or demanding something as a condition or necessity. This present participle form typically introduces a clause or phrase specifying a mandatory requirement.
This job is difficult, requiring a lot of patience.
The new safety regulations are quite strict, requiring all staff members to wear protective gear at all times.
The restoration of the cathedral is a delicate process, requiring a rare combination of historical expertise and traditional masonry skills that few modern firms possess.
As a participle, it often introduces a reduced relative clause or a subordinate clause explaining a necessity.
The rule is requiring that...The rule requires that...Learners often use the progressive form 'is requiring' for permanent rules, but the simple present 'requires' is standard for stating requirements.