A more thorough explanation:

Subpermittee: A person who is given permission to act by someone who already has permission to do something.

Permittee: A person who has been granted permission to do something.

Example 1: John has been given permission by the city to build a new house. He hires a contractor, Tom, to do the construction work. Tom is the subpermittee because he has permission to act from John, who is the permittee.

Example 2: A company has been granted a permit to operate a factory. The company hires a subcontractor to do some of the work. The subcontractor is the subpermittee because they have permission to act from the company, who is the permittee.

The term subpermittee refers to a person who has been given permission to act by someone who already has permission to do something. The examples illustrate this definition by showing situations where a person or company has been granted permission to do something, and then hires someone else to do some of the work. The person or company who originally received permission is the permittee, and the person they hire is the subpermittee.