How do I change my company name?

Navigate to settings >> features tab from the left navigation menu to modify the company name there. This company name is used in org structure & at a few other places in the app. Click on the company name field, add the name and save it. 

You can also add/edit the company name from company directory >> teams tab >> tree view. 

Click on the edit icon of the top node of the tree view and edit/delete the name and save.