There are several ways to delete elements in Bitrix24 CRM. For example, let's consider the options for deleting leads.
In Kanban view mode, you can delete elements by using drag & drop.
Or just select several elements and click Delete.
It works the same way in the list view mode - you need to select elements and click Delete.
Also, you can delete an element by opening its form > clicking the cogwheel button > Delete.
When do I need to delete CRM elements?
If you've lost a deal or a lead for some reason, don't delete it. In this case, you need to move it to the unsuccessful final stage (status) to get a correct report and analyze the failure.