How do I add a New Section/Part in the middle of a song? and Outrow?

I have a song in Strum Machine that is supposed to be: Part A 1x, Part B 1x, Part A 1x, [Part B 1x] Part C 2x, Part A 1x with an outrow.

I have everything except the [Part B in the brackets]. I don’t know how to add Part B in there.

Also, how do I creat an Outrow?

Outro sections are covered in this help doc (complete with video demo).

Currently you can only add a section to the end of a song, but then you can use the little arrows to the right of the section heading to move it up to its proper place. (Also, if it’s identical or similar to the first B part, you can save a little time by duplicating that B part instead of creating it again from scratch.)