Context: The Unicode Roadmap Committee (Michael Everson, Rick McGowan, and Ken Whistler) maintain the list of scripts that are candidates or potential candidates for encoding and their tentative code block assignments on the Unicode Roadmap page of the Unicode Consortium Web site. For some scripts on the Roadmap, such as Jurchen, Nü Shu, and Tangut, encoding proposals have been made and they are working their way through the approval process. For others scripts, such as Mayan and Rongorongo, no proposal has yet been made, and they await agreement on character repertoire and other details from the user communities involved.

Question: Michael Everson, Rick McGowan, and Ken Whistler make up what group?
Answer: Unicode Roadmap Committee

Question: What does the Unicode Roadmap Commmittee do? 
Answer: maintain the list of scripts that are candidates or potential candidates for encoding

Question: What proposal has been made for the Mayan script? 
Answer: no proposal has yet been made

Question: Where does the Unicode Roadmap Committee post information on these scripts?
Answer: Unicode Consortium Web site

Question: Who are the potential candidates for encoding?
Answer: Unanswerable

Question: Who made the proposal for the Mayan script?
Answer: Unanswerable

Question: What needs to be agreed upon before a script for Jurchen is proposed?
Answer: Unanswerable

Question: Which scripts are user committees no longer proposing?
Answer: Unanswerable

Question: What committies have to approve proposals?
Answer: Unanswerable