The easiest way to add a new stage is to copy an earlier stage and modify it. That's what we'll do here...

• Navigate to the Admin section

• Select your pipeline from the pipeline list.
• Click "Edit This Pipeline"

• Copy the original stage:

  <stage name="uat">
      <approval type="manual">
          <authorization>
              <role>qa</role>
          </authorization>
      </approval>
      <jobs>
          <job name="deploy">
              <resources>
                  <resource>tomcat</resource>
              </resources>
              ...
          </job>
      </jobs>
  </stage>

• Paste it in the pipeline and edit the name and details as appropriate:

  <stage name="production">
      <approval type="manual">
          <authorization>
              <role>release-managers</role>
          </authorization>
      </approval>
      <jobs>
          <job name="deploy">
              <resources>
                  <resource>tomcat</resource>
              </resources>
              ...
          </job>
      </jobs>
  </stage>

• Click "Save"