Questions and objectives assessments can optionally allow a rating input from the user. To use a rating-style question on an appraisal form, select the appropriate question type when editing the form.
The default rating looks like this, but it can be changed easily using the Configuration area.
In addition to specifying a default custom rating scale for all questions, you can override this for individual questions. For example, you might like to have Yes or No questions, or for objectives a Did not start / Partially met / Fully met / Exceeded rating scale:
To change the rating options for a specific question, do so on the form editor. Once you've made your changes, they'll override the default rating scale as set in Configuration.