No. It comes up. There is no place for frequency entry.
Well, that just isn't the case. I have no idea what to tell you other than you are not looking at the favorites list editor. The favorites list editor is what is used for the purpose of adding frequencies from the main database into a favorites list as well as adding frequencies not found in the database.
You can add trunked systems or conventional, analog or digital. You can set service types as well as many other functions to customize your favorites lists.
I had recommended in a previous post that you look on youtube for videos to help you, there are lots of them. Did you try that?
Here is one that you should have found with a very simple search... if you watch this carefully and follow it all the way through, it should help you find what you are doing wrong. It starts with creating a favorites list from the database, and then shows you how to add your own frequencies....... All with the favorites list editor.
Enlarge it to full screen size and use the settings button at the bottom to set the quality to to 1080P so you can see the text clearly.