From the Admin Dashboard, click on the Staff tab on the left hand side. Click on the staff member for whom you'd like to add detailed information. On their Overview tab, you'll see four sections:
Details: record personal and contact information
Medical: record insurance and doctor information
Employment: record details on employment at your center
Emergency contact: record emergency information
Add information by clicking the "Edit" button in the top right corner of any section. Once completed, click "Save" in the top right corner.