How to get single rank and dual rank memory to work together on a server?

Question

System administration

There are two memory sticks. One of them does not want to work, although the server sees it.
Motherboard: Supermicro X9SCL/X9SCM
DIMM2: Kingston 9965525-037.A00LF 8GB DDR3-1333 ECC DDR3 SDRAM (9-9-9-24 @ 666MHz) (8-8-8-22 @ 609MHz) (7- 7-7-20 @ 533 MHz) (6-6-6-17 @ 457 MHz) Module size 8 GB (2 ranks, 8 banks)
DIMM3: Kingston 9965442-032.B00LF 8 GB DDR3-1333 Reg. ECC DDR3 SDRAM (9-9-9-24 @ 666MHz) (8-8-8-22 @ 609MHz) (7-7-7-20 @ 533MHz) (6-6-6-17 @ 457MHz) ) Module size 8 GB (1 rank, 8 banks)
Question: is it possible to make them work together and how to do it? In which slots to stick this or that die.