The phrase "allow them to invoke" is correct and usable in written English.
You can use it when granting permission for someone to call upon or use something, often in a legal or formal context.
Example: "The new policy will allow them to invoke their rights in case of any disputes."
Alternatives: "permit them to call upon" or "enable them to use".
This month, McGinty allowed Loehman and Officer Frank Garmback, who drove the squad car to the playground, to read prepared statements to the grand jury, but then allowed them to invoke the Fifth Amendment to avoid questioning by lawyers.
To the extent that referenda impassion citizens and allow them to make their voice heard without invoking the "tyranny of the majority", they can be very valuable to democratic functions.
Tournament officials have not invoked emergency heat rules which allow them to halt play and close the roofs on the centre and second court, although they have allowed a 10-minute break between the second and third sets for women's singles and junior singles matches.
The anchors are allowed to invoke the ghost of Edward R. Murrow because it's an easy way for their bosses to allow them to let off steam.
While the program allows the I.R.S. to grant whistle-blowers as much as 30 percent of the money they recover, some federal officials urged the I.R.S. to invoke a rule that allows them to deny an award to informants who withhold information or engage in illegal activity.
Presidents tend to invoke the Antiquities Act, which allows them to unilaterally protect federal land, in their second term.
The White Sox have invoked a contract clause that allows them to defer most of Thomas's $10 million salary.
EME is designed to allow publishers to invoke global copyright rules, such as the European Union Copyright Directive and the US's Digital Millennium Copyright Act, which prohibits tampering with a digital lock, even for legal purposes.
Maduro hopes the state of emergency will allow him to invoke powers to help stabilise the country and "confront all the international and national threats against our fatherland in this moment".
For example, some insurance policies allow you to invoke a terrorism clause if there has been an act of terror in the city you're planning to visit within a month of your vacation.
