To delete a tour, go to your account, and click on the settings icon.
Select the tours you no longer need and click delete. In the same way, you can clone itineraries.

You have two ways to share your tour with friends if you want to plan together:

My account:

• Log in to your account and hover over the tour.
• There you will find a sharing icon.
• Click on it, fill out the form, and click "Done."

In your itinerary:

• Open your itinerary.
• Find the sharing icon.
• Fill out the form and press send.

A link with the route will be sent to your friend's email, and you get the chance to plan your trip together. Moreover, your friend can also edit the itinerary and leave comments on the tour.
To do that, click on the three dots to the left of the block you want to attach to and click Add Notes. Then, in the window that appears at the bottom, enter the necessary information and click save.