To gain a different company access, user has to seek approval from an employee with a matching email domain to the company and after receiving the approval, user's access to the site will be approved, per the Broadcom business rules.
To ensure your company's account is kept secure, there is an "access approval" process in place, for all requests made to your company's account in Broadcom.
When a user from different company enters a SID requesting access to your company's account, an email is sent to him/her asking for Approval from an employee with a matching email domain to the company he/she's is attempting to gain access to.
The approval email template will look like below (screenshot):