Please note this functionality only works within a single map. To move plans to different maps please see this guidance.
From the left hand panel click on the three vertical dots next to a plan name and click on Select all.
From the next screen select all the types of features that you would like to copy and click on Done.
These will then be highlighted on screen and you can then select the copy function from the top of the screen or on a right click.
Select the plan you want to copy into or create a new plan and Copy feature to plan.
All the features you selected will now have been copied.