Simple, just tap the second staff to add staff in check out screen.
Video 1: https://drive.google.com/file/d/1RyENRl3nybh3DHn_08zUERmI8DwjPGd_/view?usp=share_link
Video 2: https://drive.google.com/file/d/1SRzhD48lcWttazV-KBCAHCznx0RF53pK/view?usp=share_link
video 3 hold ticket and combine: https://drive.google.com/file/d/1SRzhD48lcWttazV-KBCAHCznx0RF53pK/view?usp=share_link