To set beneficiary is only possible when you start to write the post.That's in Ecency front-end, @rafzat. In others - peakd, hive.blog is similar.
Here are three screenshots.
- You open the post editor, and below, you have a button "Advanced." Click on it.
- Then you go to the Advanced mode on the right side of the post editor. There you have the blue button Set Beneficiaries. Click on it.
- You come to the Beneficiary editor. Just put the name of decency user and set up %.