Requests on behalf of other

Hi everybody,

I know that OneIM provides the possibility to make requests from ITShop on behalf of others; in particular I know that a manager can make requests on behalf of his direct subordinates whether he is their direct manager or he is the manager of the department they belong to. But however I would like to make a user able to make requests on behalf of other employees of which he is not the manager or a some kind of responsible person.

How can I implement such a solution ? Which kind of permissions I have to provide to the user in order for him to be able to make requests on behalf of others?

Thank you in advance,