The Logo (above 'Candidate Login') and Left Frame Graphic can be changed when student registers or logs in to the panel.
Navigate to Admin-> Settings ->Account Information -> Candidate logo or Upload favicon then click on 'Save changes'.
To change Left Frame Graphic for Student Registration or Login, Navigate to Admin-> Settings -> Candidate Panel -> Login Configuration, click on edit to perform changes and unlock the configuration settings, upload file with supported type .jpeg or .png and resolution 600 x 1080px, then click on 'Save Changes'.