How to use the Read More Right Here Plugin?

Dear all,

I installed and activated the “Read More Right Here” plugin. I want to use it in my posts but I don’t know how. I read about it but the plugin description was not very helpful.

Check out my site: https://www.journalismhub.com
Let’s say I want to add a “Continue reading” link somehwere. How?

Please if you are going to answer my inquiry, I would really appreciate it if you can provide me with simple and clear steps.

Many thanks.
JH