How do I mark a survey as completed? In the timeline of the certificate you want to extend, double-click on the symbol (this is only possible if the colour is orange   or red   ) or right-click on the symbol and select  Endorsement... Complete all required fields. Select the annual or intermediate survey that has been completed. Click on  Save & close.  After extending the certificate, a green ball with a curl will appear.  When carrying out a survey, select the option  Extra survey  to save an interim survey in the certificate history.