I see you have one adapter for milling emax on AG Mill you should have two more.
When you have 2 or 3 restorations to mill you would need to nest your design one at the time and each time you choose right, center and left holder/ adapter. (program defaults on center every time) choose correct holder from drop down window on left corner of nesting software.
When nesting is done. One at the time, in your milling software you need to choose to mill job 1, 2 and 3 to mill
You are done )
I hope it helped.