Assuming you have sufficient rights, you can create concepts by going to the browse files tab, and navigating to a suitable folder where you would like to store the concept.
It is advisable to create separate, dedicated folders that will only contain concepts. Such dedicated folders will be automatically hidden for beginning ClauseBase users, avoiding that such users — who may not be familiar with concepts — would get confused when encountering concepts while browsing for templates or clauses.
Folders to hold concepts can most easily be created by holding Shift and click on . This will create a dedicated folder that will get automatically hidden for beginning users. You can also modify an existing folder by selecting it, clicking on , and navigating to the folder subsection at the right side, and finally changing the folder type to concepts.