You can add members to the Organization Roster at any time.
To add members to an organization roster:
2. Click on the name of the Organization.
3. Click on the chart where you wish to add a member.
4. Click the blue +Add member button.
A Member Details dialog box appears.
5. Fill in the First name, Last name, etc. Click the blue Save button at the bottom or press Enter.
Here is a quick video: