Explanation introduction video
https://mega.nz/file/uldxlQwI#nqXycxM5sTzkGCbLo61nthjb1GIKOO_BIQg-j-Bfd7s
Instructions for creating the Bills (1)
Video for clarifying the point 5 in the documentation (IVA)
https://mega.nz/file/uldxlQwI#nqXycxM5sTzkGCbLo61nthjb1GIKOO_BIQg-j-Bfd7s
Explanation of the procedure:
https://mega.nz/file/zwlyxKYR#56G3WBesgPPa4r6GIO7pxBGwsPi8OwP3eJkG9e3c5rI