Pre-prosessing tab missing

Hi all

I just discovered SIRIL.
I’m trying to learn the software by watching tutorials.

I don’t see the “pre-processing tab” in the right top menu?

Thanks

You’re probably watching tutorials that are not updated. I would recommend to read the officiel tutorials on our website.
This tab is called calibration now.

Thank you.

Is there any tutorials about processing L RGB images?

Our tutorials are all in the same place: Siril - Tutorials

Do I use the `OSC_preprocessing scribt for monochrome as well or the the mono_preprocessing?

Here you will find all the needed explanations: Scripts — Siril 1.2.0 documentation