Investors & landlords

Thanks for the reply but I want to know where should I add my expenses to. I have 3 different lines of work, I tried to add a new line of work for music composition but Turbotax UI is asking me to add some "income" for that line of work. I do not have any 1099-NEC or anything because I did not make any money out of this. Should I just add those expenses to other work of lines of mine? For example, I have one for Software development, is it okay for me to add those expenses as MISC expenses for it?