What is a Provisional Use Permit?
The Provisional Use Permit (PUP) procedure provides for certain uses that are permitted in a district but that may be approved with conditions or restrictions that make them compatible with surrounding properties. For example, most telecommunication towers require a PUP. The main differences between a Provisional Use Permit and a rezoning request are that the Provisional Use Permit is always for a specific use (such as a telecommunications tower or pool hall) and that the county can set the conditions for approval of a Provisional Use Permit. In a rezoning request, the applicant voluntarily proposes conditions (proffers) that the county can either accept or reject.
Read much more about Provision Use Permits here, from Planning.