You can add a link to the Instructions for Students this could be the link to the exam or to a page with additional information that the candidates will require to complete their exam.
You can add the link by selecting the link icon as shown below.
A pop up window will appear where you can place the URL and choose the text and title to display.
The text and URL will then be added and displayed on the text box and you can edit the instructions as further as you wish.
To edit or remove the link, you need to select the text with the URL and then on the link icon on the menu of the text box,
A pop up will then open where you can just erase the fields with the link and text added previously. After erasing all the fields, you select save. From the text box you will need to remove the text as well, by simply erasing it.