Only administrators of the Solomon Sharing Together subscription can add or remove participants.

Are you an administrator? In StudyBible Online go via Settings to your profile. Click on Products and then, for the product Study Bible Package Solomon, on User Management.
Briefly: Settings > Profile > Products > User Management

In the User Administration screen, you see an overview of all persons who use the collective of which you are the administrator. From this screen you can easily add or remove individuals.

Situation 1: The person already has an existing Study Bible account.
Enter the email address of the existing Study Bible account. The account will automatically be linked to the collective account. Please note that the user does NOT need to create a new account. Tip: just filling in the e-mail address is sufficient. First and last name will be completed automatically.

Situation 2: The person does not yet have an existing Study Bible account.
Enter the first and last name and email address. A Study Bible account will be created automatically and an invitation will be sent to the person.

Should you remove a person from the collective Study Bible account, that person will be able to continue using the free Study Bible package.

The screenshot below shows what the screen for User Management looks like.