There are three primary ways in which a Company can be added in Freshdesk

  1. Manually add a company using the 'New Company' option under the Customer's tab
  2. Automatically add Company when importing contacts
  3. Bulk import Companies using a CSV file

If you are on Freshdesk Mint, you would be able to find the 'New Company' button under the 'New' dropdown on the top right corner near the 'Search' icon as shown below.