Hi @eugene23. I’m sorry for the shortcomings on our documentation. Unfortunately the screenshots and instructions you found for Administering Drug Regimens was related to OpenMRS 1.9.x and previous versions. I have updated the documentation with a note at the top of the page to indicate this.
There has been some recent talk about how to manage regimens and drug orders in the Reference Application. See here…
For the legacy UI, I’m afraid there is no current method or anything in the works to replicate this functionality.