If you don't see answers to your questions in these guides, you can check out the THL Place Dictionary Editor's Manual. This resource addresses Places in great detail, and includes recommendations for creating places and filling out metadata fields.
Bear in mind, however, that this document is intended for scholars in the Tibetan Himalayan Library. Some information may not apply to general users, or may be out-of-date. This is just a stand-in resource while we update the Knowledge Base.