While it is not possible to drag an inner section inside of another inner section, there is an alternative method to accomplish this by following along below.
- Drag a Inner Section to your page
- Select the parent column that the Inner Section resides in (not the Inner Section itself)
- Copy the contents
- In another column right click and paste the clipboard content
- This will add a new column with an Inner Section
- Delete the unneeded column
- Repeat steps 4 – 6 if needed
- Save your work
This layout, while complex, does adapt to mobile devices. You will need to adjust the column widths.
Tip: This will create a lot of DOM elements and may affect your page performance. It should be used only in cases where it is mandatory.