Can you make custom dynamics like the following, for example?
I understand you add prefixes and suffixes, but I could not find a way to have a suffix following with a newline.
The only way to do it is as Playing techniques. You’d have to use the symbols editor, which is quite powerful. Then, you can also use the playback playing techniques and modify the expression maps accordingly to give them the playback meaning that you want.
The alternative would be to have a separate dynamic with a prefix and hidden intensity marking, or a text object with the appropriate text formatting (such as using a paragraph style for consistent formatting) and moving them into position, but for lots of instances that could very well not be ideal.