If you have not purchased the Lee 1000...
DON'T BUY IT!
To keep you out of trouble, I still screw up, even after 31 years of reloading buy a LEE TERRIT Kit. You do not need the AUTO-INDEXING until you are very familiar with what you are doing and why you are doing it.
The Lee Terit press uses one shell holder and has 3 slots for dies/powder measure.