This options helps you in creating/managing accounts.
Steps for creating Account:
1. To add account, click click Organization structures in Settings section and select "Accounts"
Organization Structures > Accounts
2. Click "Add Account"
Enter Account legal name, assign Account manager and other details as shown in the screen shot
3. Click "Save" and an account with the same name gets added.
You can add multiple process by repeating the above mentioned steps.
After an account is created; you can Edit/Deactivate the same by clicking on the added account and make the changes.