After login from student panel, then from sidebar menu click on Online Exam.
Here you can see all subjects exam papers.
To view exam click on View icon present at Action column in the online exam page, at click of this icon online exam page will be open.
To start exam click on Start Exam button present at online exam page, at click of this button Exam page will be open.
After solving all the questions, student can submit exam by clicking on Submit button.