Grant approval to is a phrase used to describe the process of giving permission or consent for something to happen. It is often used in the context of a higher authority granting approval to a lower authority, such as a manager granting approval to an employee. This phrase is also used in the context of government grants, where a government agency grants approval to a project or organization. In any case, granting approval to something implies that the person or entity granting the approval has the power to do so.