It depends on which front end you are using but the process is about the same.
However on peakd.com you can set the beneficiary to your posts as a default. I am not sure about the others.
Sign into your username on https://peakd.com
Go to settings
Scroll down to beneficiary settings section.
Set @commentrewarder as default beneficiary and set to minimum 5% or more.
Make sure you save settings.
Write and post your original post
Additionally you can set these settings directly in your post settings before publishing it.
Thanks so much. That I did I used more Ecency, but I'm to in Peakd.
Happy to help.
The higher the % the higher the reward?
Read the post for details.