Lines

Hi
Is there anyone who could help me with creating a custom line? These days I am copying a composer's manuscript into digital format for a publishing house.
There is a note from the composer that is written as: pizz. adlibitum with a continuous dotted line as shown in the screenshot of the manuscript. In the second screenshot of musescore 4 I found something that would serve me if I could first edit the word Staff and replace it by typing pizz. adlibitum. The main reason this serves me is the right part of the line that ends downwards, showing exactly how far the text line applies.

Thank you very much, anyone who can, I would really appreciate it!