A company profile can only be created through the settings of a personal account.
There, in the experience section, enter the full name of the company as your employer; add the position and working time. Then save the added experience.
The next step is to click on the company name that's highlighted blue. You will be redirected to the page where you can add a new company profile.
After filling in the rest of the form and clicking the “Add” button, a new entry will appear in the experience section of your profile and it will also be possible to edit the profile of the employer.