Can I also store photos as files for the candidates?

Can I also store photos as files for the candidates?

Navigate to the Assessment and select "Candidates" from the menu on the left. Here you can upload candidate-specific files in PDF, PNG, JPEG, MOV, MP4, DOCX and PPTX format. This enables documents such as resumes, photos, and videos to be uploaded to the  administration interface and then be directly available to you in the  observer interface. 

You can find more information about uploading files here.