The phrase "allow a certain number of" is correct and usable in written English.
It can be used when specifying a limit or quantity that is permitted in a particular context.
Example: "The event will allow a certain number of attendees to ensure safety protocols are followed."
Alternatives: "permit a specific quantity of" or "authorize a limited number of".
He also made sure they would allow a certain number of house tours, Ms. Banks said.
These could include forcing the group to sell mobile spectrum, imposing wholesale price caps, and demands to allow a certain number of virtual mobile networks to piggy back on its masts.
Dennis is also enthusiastic about the way sponsorship will work within the app, but warns that it will reflect the same editorial-first attitude of the print edition of The Week. "If you pick up any issue of The Week, there are 35 pages of editorial every issue, and they only allow a certain number of pages of ads," says Dennis.
The user right for such a program, which is granted by a licence agreement, includes the right to store a copy of the program permanently on a server and to allow a certain number of users to access it by downloading it to the main memory of their work-station computers.
Most frequent flyer programs allow a certain number of miles to be purchased per year.
But Manchester City Council said it could only allow a certain number of people into Albert Square and Exchange Square and advised fans to "get there early to avoid disappointment".
You're allowed a certain number of such double-guessings, which you have to be very cautious with.
In many keeper leagues, there is a provision for allowing a certain number of minor leaguers to be drafted.
But they are allowed a certain number of errors, usually 5 percent, before they are considered to have failed.
Also, each year Bonaire allows a certain number of reefs to essentially lie fallow, designating them off-limits until they can recover from any damage.
Zurich Zurich has capped the number of parking spaces in the city, only allows a certain number of cars into the city at any one time, and is building more car-free areas, plazas, tram lines and pedestrianised streets.
