Canon R6 files are not supported directly by LR6...it cannot read them in. If you have Canon R6 files, you would need to convert them to DNG files, which can then be read in even by the old LR6.
Not sure what your reference to 'Basic section' is. My LR6 has:
- 'Library' mode which imports and exports files
- 'Develop' mode, which allows White Balance, Exposure, Contrast, control of shadows/highlights, cropping and angle adjustment, sharpening, hue control, etc
- 'Slideshow' mode, and several other modes that are not often used by the majority of users (I cannot recall anyone on POTN having any questions about using any of these other modes!)
Within Library mode there is a Quick Editing mode, which is a small subset of capabilities in Develop mode