4. In the left sidebar, click **{% if currentVersion ver_lt "enterprise-server@3.1" %} Beta {% else %} Optional {% endif %} Features**.
  {% if currentVersion ver_lt "enterprise-server@3.1" %} ![Beta features tab](/assets/images/github-apps/beta-features-option.png) {% else %} ![Optional features tab](/assets/images/github-apps/optional-features-option.png) {% endif %}
5. Next to the {% if currentVersion ver_lt "enterprise-server@3.1" %} beta {% else %} optional {% endif %} feature you want to enable for your app, click **Opt-in**.
  ![Opt-in button to enable an optional feature](/assets/images/github-apps/enable-optional-features.png)