You can add Custom Questions to your official Online Course Evaluation. Custom Questions must be created and then attached to your official evaluation before you release it to students.
Note: In my example, the course I am using is titled: “EvaluationKIT Demonstration for ITD Lab.” You will see the title of your course.
Access the Online Course Evaluations page:
Log into Canvas.
Click on “Account” in the upper left and then “Course Evaluations.”

If you have a student role in any courses, you will automatically be entered into EvaluationKIT with the Student/Respondent role. If this happens, click the drop-down in the upper right and choose “Instructor” to enter the instructor role.

Create your Custom Survey:
You are creating a mini-survey of questions that you will attach to the University-wide survey. You can re-use this survey with multiple courses, so you only need to create more than one if you have different questions for different courses.
Click on “Custom Question Survey” at the top of the page.

Click on “Create New Custom Question Survey.”

Give this Survey a title, and then enter in a description so that you can remember what this survey was created for. I’ve titled my Survey “Additional Questions - Online.” Click the “Save New” button.

Add your Custom Questions:
Click the “Select Question Type” drop-down to choose what type of question you will be adding. Click on the question type to select it and then click on the “+ Add” button.

Here is an example. I have chosen “Single Selection” as the question type, typed out my survey question in the Question Text box, added my Response Options, and set my settings with the following options:

Click the “Save” button to add the question. This is how the question looks on the survey:

The icons in the upper right allow you to edit, delete and copy the question. Once you are happy with your question, you can click “Select Question Type” and then “+ Add” button to add another question, or you can click “Home” at the top of the page if you are finished adding questions.
Attach Your Custom Survey
After creating your Custom Survey, you need to attach it to your official Online Course Evaluation. Click on “Attach Surveys to Projects” link at the top of the page:
Click the “Plus” sign to the right of the project you will be attaching your custom survey to. The project title will include the current semester and year like the example below (Fall 2015 Course Evaluations):

Click “Add Custom Question Survey.”

Click the “Check Mark” to the right of the Custom Survey you want to attach. My Custom Question Survey was titled “Additional Question – Online,” so I click the check mark to the right of that Survey to select it, and then click the “Select Courses” button.

Next, click on the “Add Courses” button.

A list of the courses within this project that you can attach the questions to is shown. Click the box to the left of all courses you want to attach these custom questions to, and then click the “Add Selected Courses” button.

A box will pop up letting you know you have successfully added the custom questions. Click “OK” to close the pop-up box.
You will now need to release your Online Course Evaluation to students. Follow the instructions here: Setting up Online Course Evaluations