You can make a duplicate/copy of an existing training plan to save time instead of creating similar plan variations from scratch.
First, go to "Coaching" then "Plans" from the menu. Then find the plan you want to copy and take it into "Build" mode with the button.
Once the plan loads select "More tools" then "Create a copy" from the top right hand button menu.
Now type a new name and description for the new copy
You can copy the entire plan or part of the plan using the options.
Once you've configured the options, click the "Create Copy" button and a new version will be created, wait a few moments and the new plan will now load in build mode ready for you to customize further.