Thanks for the document. However, I am not seeing an option to delete as mentioned in the article. I have tried logged in as DMReleaseAdmin and DMAppAdmin.Is there a specific access group required to see this option?
For others who might be reading this, I'll describe the 4.x behavior:
DM 4.1: the trash icon only appears if there is not a build is progress
DM 4.2 - 4.5: the trash icon only appears if you have authorization (regardless if there is a build in progress)
DM 4.6: the trash icon only appears if you have authorization; it is disabled if there is a build in progress
So, if it is not there, it suggests that you don't have authorization. Have a look at Users > People and see what role you have. Then go to Users > Roles and privileges and click on "View all" for the role you have. For the Pipeline column, you should see Create, Edit, Delete
Also, as a person with zoom turned on an OS level, I see a left-right scrollbar. You might need to scroll to the right to see the trash can depending upon your monitor, etc.