Top level topics in Slab are topics that are not organized under a parent topic. Slab admins have the ability to limit who can create top level topics in their organization.
There are two ways to create a top level topic in Slab:
Creating a new topic at the top level
Turning an existing subtopic into a top level topic
Admins can allow all users (except guests) to create top level topics, or they can restrict this capability to only admins. No matter the setting, Standard users can still create subtopics for topics they have permission to edit.