If an agency permits an employee to make an allotment for dues to a foreign affairs agency organization, the agency must also provide, in accordance with section 15 of Executive Order 11636:

(a) that the employee be allowed to revoke the authorization at least every six months; and

(b) that the allotment terminates when the dues withholding agreement between a foreign affairs agency and the organization is terminated or ceases to be applicable to the employee.