The phrase "allow one hour" is correct and usable in written English.
It can be used when specifying a time frame for a task or activity that requires an hour to be completed or considered.
Example: "Please allow one hour for the meeting to ensure we cover all the topics on the agenda."
Alternatives: "permit one hour" or "allocate one hour".
We spent hours learning how to take our bearings, how to read contours and how to engage Naismith's rule in order to get a rough idea of how long it would take us to complete a certain route: allow one hour for every 5km (about three miles) on the flat plus one hour for every 600 metres of climbing.
Please allow one hour for this meeting.
So, when planning my experiment, I decided to swipe right for the first 100 suggested matches per account, then allow one hour afterward to see what kind of messages and matches it turned up.
Note: Some parks allow one hour early entry for guests staying at Walt Disney World resorts.
Allow one hour to reach the summit, and half an hour to return.
When you are in the box, you are confined for 23 hours a day, and although you are allowed one hour in the daylight, that hour is spent in an outdoor zoo-like cage where you are often taunted by other prisoners.
This allowed one hour while eating at the Mexican restaurant 3 minutes walk away, which was top rated online, though perhaps not so in reality.
"I spent 24 hours a day in solitary and was only allowed one hour of recreation during the entire 66 days I was there," she said in a statement.
Senior commanders at Joint Task Force Guantanamo -- the military unit responsible for administering the detention center -- said the visiting Kazakhstanis would be allowed one hour with each prisoner and one day at the detention center.
Inmates were allowed one hour a day to walk about in a small yard with a roof, and to use cubicle toilets with actual toilet paper (the one in the corner of the cell had no such luxury).
They are allowed one hour of exercise a day, phone calls are restricted in many cases to instances of "family emergency," which in practice seems to mean only in the event of the death of a family member.
