I just cannot find how to place the (3.2) harmonic inside parentheses.
Is there someone out there who uses this style on Finale who can help me?
Parentheses in Finale are in the articulation tool. After placing the note on the score, enter the articulation tool and click on the target notehead. The left parenthesis and the right parenthesis appear as two different articulations that you will have to be attached to the notehead separately. As a side note, the website finaleforum.com (mentioned by someone else) has some great moderators and they are very responsive if you have any future problems.