The phrase "allowed to increase their" is correct and usable in written English.
It can be used in contexts where permission or authorization is given to someone or a group to raise or enhance something, such as resources, limits, or capabilities.
Example: "Employees are allowed to increase their work hours if they wish to earn extra income."
Alternatives: "permitted to raise their" or "authorized to boost their".
That clearly meant that particular groups would be allowed to increase their pay and others be restricted.
Some were allowed to increase their emissions by a certain amount; others were required to make significant cuts.
Chancellor George Osborne has said councils will be allowed to increase their borrowing capacity in order to finance the building of more homes.
But developing countries, including China, South Korea, Mexico and other rapidly emerging economies, were given no targets and allowed to increase their emissions at will.
The UN scientists said people in poor countries should be allowed to increase their consumption of animal protein, which billions of people are lacking.
For example, individuals could be allowed to increase their retirement security by putting more money into their social security accounts, with commensurate increases in pension benefits.
Functionalization allows to increase their dispersibility and biocompatibility, to conjugate biologically active molecules, and to impart multimodality.
Our approach is complementary to existing methods that rely on structural properties and we expect that their combination with our approach allows to increase their sensitivity and specificity.
Under the new rules, government departments will not be allowed to increase the size of their fleets for five years.
These investments improved working conditions, formalized workspaces, allowed traders to increase their inventory and brought dignity to critical jobs.
This allowed them to increase their leverage (borrowing relative to assets) as well as their risk – without this risk actually showing up in a report.
