If you'd like to copy or move one or more sections to another task (either in the same template, or in a different template), follow these steps:

The source template must be open in edit mode. Then click the checkbox on the top right corner of the section (s) you want to copy or move:

Next, click the green Copy/Move button that appears:

You'll then see a dialog like this. Search for the destination template name:

Then, select the destination template (keeping in mind you can choose the source template if you just want to copy/move to a different ask within the same template) and the desired task you want to copy or move the sections to:

Then if you open up the destination template and the specific task you selected, you'll see the sections (s):