In order to organize your topics and facilitate the navigation, you can create topics groups. Only the Admin(s) of the workspace have that right.
Note : a topic can be in different groups at the same time
To do so, go to the Settings of your company workspace and select "Topic Groups", pick a name and select "Company users" and validate the group creation. A dedicated url is created ..scoop/it/tg/nameofthegroup you can share it to your team and save it.
Then, to add a topic to the group, go to the settings of your topic > topic group.
A new button will be displayed at the top of your workspace, you can access the different groups by clicking on it. A drop down menu will display all the groups created.