Your S4 account allows you to manage multiple users. Access the User Management Panel by clicking the Setup button in the left-hand navigation and then clicking the Users tab in the page navigation.
Each S4 account must have at least one user with Administrator rights, who can create new users, modify permissions, remove access or generate password reset notifications.
Each user or administrator can also be restricted to interacting with only certain Salesforce orgs. This gives your team a lot of flexibility in terms of having multiple users who only have access to findings and setting for specific organizations and instances, rather than your entire S4 platform.
Add Users - To add a user, simply click the Add User button. You will be prompted for an email address and whether that user should have Admin privileges.
Salesforce Org Access - You can restrict access to specific Salesforce orgs by using the drop down menu that appears for each user under the Salesforce Org Access columns. If the input field indicates "None", it means there aren't any restrictions on the user and they can access all instances and orgs within your S4 account.
Reset Password - Click on the unlocked padlock icon to generate a password reset sequence via email with the selected user. You will be prompted with a confirmation modal dialog.
Remove User - Click on the rubbish bin icon to remove a user from your S4 account. You will be prompted with a confirmation modal dialog.