Hello all.

I am trying to create child theme with this totorial, but the theme does not show up in the admin area. Does Sigma theme even support child themes?

TOTORIAL / DOCS: https://docs.osclasspoint.com/how-to-create-child-theme

Thanks for you answer and best regards.

Luka

Check this:
https://osclasspoint.com/blog/osclass-create-child-theme-b21

Theme cannot support child themes, it is functionality of osclass