There are 3 way to select from a transcript and copy it across to the programme script
select text in transcript
click "+ Selection" button
The text selection will be added above the orange insert point
You can select text in a transcript, and use the contextual menu in the programme script to paste the selection.
There is an advanced option to select text in a transcript and have it "auto copy /paste" in the programme script at the position of the orange insert point. To enable this click the check box next to "+ Selection" button.
This feature is for advanced users for a faster workflow.