Instructors have the option of allowing students to take a Respondus LockDown Browser quiz on an iPad. By default, requiring the LockDown Browser means that a student must use a Mac or Windows computer.
If you wish to allow your students to take a LockDown Browser quiz on their iPads, you will need to opt into that permission in the Respondus LockDown Browser and Monitor Dashboard.
Information about how to access the Dashboard and access the LockDown Browser options is available in Desire2Learn in Faculty Resources in the Respondus LockDown Browser and Monitor Dashboard module. In that module are documents outlining how to add the Dashboard to your course and how to change the iPad option.