If you import clips with different camera profiles, Colourlab Ai will flag them in the "Camera Rules". Then going by the Camera Prefix (ARRI, BMD, Panasonic, Sony, Canon, etc.), select the matching profile.
There are 2 ways to change camera profiles later.
Maybe you forgot to set a camera profile, or the wrong profile was selected.
a) If you need to change the camera settings later, go to Project > Camera Settings > and reassign the camera.
b) Change the Camera Profile on a clip in the timeline. Select the clip, click on the "Shot Settings" panel, and assign a camera profile to that clip.