Look, I think we should keep it to a single numeral rather than five to seven minutes, but I think we can capture what Ms. Sahota wants to do by simply beginning the sentence with: “that, at the discretion of the chair, witnesses be given five minutes for their opening statements; that, whenever possible, witnesses provide the committee with their opening statements 72 hours in advance”. It gives you, as chair, the flexibility, after you informally consult with members of the committee, about extending it beyond five minutes, but it makes it clear that the standard is five minutes. If there's an exceptional circumstance that warrants giving a witness a longer amount of time, Chair, I trust your judgment that you will consult widely and seek a consensus to use your discretion to elongate the time beyond five minutes.
I think that if we begin it with “that, at the discretion of the chair, witnesses be given five minutes for their opening statements; that, whenever possible, witnesses provide the committee with their opening statements 72 hours in advance”, it captures what Madam Sahota wants to do and what we're trying to do here.