Hello and welcome @m.fanega 
If you don’t mean the sidebar and are referring to the /docs page, you need to add each category and subcategory to the docs categories admin setting, or include the relevant tags in docs tags.
Hello and welcome @m.fanega
If you don’t mean the sidebar and are referring to the /docs page, you need to add each category and subcategory to the docs categories admin setting, or include the relevant tags in docs tags.