If you have AMS just use one of the provided print profile
Swap Instructions (if you do not have AMS):
Start with black PLA Basic Filament with spool / 1kg / Blue (10601) | Bambu Lab EU
At layer #17 (1.48mm) swap to Red PLA Basic Filament with spool / 1kg / Black (10101) | Bambu Lab EU
At layer #20 (1.72mm) swap to Gray PLA Basic Filament with spool / 1kg / Cyan (10603) | Bambu Lab EU
At layer #29 (2.44mm) swap to White for the rest PLA Basic Filament with spool / 1kg / Blue (10601) | Bambu Lab EU