From the screen you're on, the three dots top right.
From the contacts screen, you click the square on the left and a bin will appear.
Don't have either one. I guess their is an admin setting.
Yep, it' only possible if you're an admin. Then you can do it from the 3 dots in the top right or on the list view by selecting them with the check box on the left and clicking the bin icon in the panel that pops in from the right. @John Shelburne