I cannot move/resize the panes in a Coach Activity, what to do?

In Coach 7 for tablet version 7.1 the layout screen is locked by default. To unlock it:
– Open an Activity/Result.
– Tap the Menu icon located at the right side of the Activity toolbar and select Display > Locked Layout.
Now you will be able to create new panes, to resize panes and to switch the content of the panes.