IN PWPS IF

1-WE MAKE THIS FOR Butt like B-U2-GF  WE CAN USE FOR WELDING T joint same configuration of TC-U4b-GF, also CAN WE USE DIFFERENT WELD TYPE LIKE IF pWPS QUALIFIED TO WELD SINGLE V GROOVE butt   CAN IT USE IN DOUBLE V GROOVE butt ?is there notes in the code for that.

2- IF WELDER QUALIFY FOR B-U2-GF AND WE HAVE  ANOTHER PWPS TC-U4b-GF  HE CAN USE IN PRODUCTION OR he should qualified by the pwps which he will use in production
3-for TC-U4b-GF I can use it for fillet and PJP or no by qualified welder by this WPS?