Within Teamwork Desk, you can add customers to companies on your site.
Note: Only site administrators can manage companies and which customers are associated with each company.
Go to the People area of your site and select the Companies subsection.
Select the relevant company in the list to open the company's profile and select the Customers tab. You can then click the Add Customer button in the top right.
In the Add Customer modal, you can select one or multiple existing customers to add to the company. You can also click the Add new customer option in the bottom left to create a brand new customer.
If an existing customer is already domain matched to another company, that user will be greyed out and not selectable.
Once you have selected the relevant customers, click the Add selected button. Any customers currently in companies (not domain matched) will be listed in a confirmation modal. You can choose to move all of the selected customers or uncheck any you do not want to move from their existing company.
For more information, see: Adding a Company