More than 4 filaments... manual?

Hello. I ask you please if you can explain how you print 8 colors with a single AMS. I don’t speak English and I don’t understand how they do it. Do they add 8 colors in the bambu studio? If so, how do you make color 5, 6, 7 and 8 1, 2, 3 and 4? I hope you can help me. Thank you