Hi,
the answer is in the manual, but you didn't open it :P
No, seriously, it's the second manual chapter, and the first one is "Organization". Since I hardly can classify "Organization" as a chapter, I'd say that you didn't read the first manual chapter.
Ok, I understand that reading the full manual is boring, but at least one should read the index, isn't it ?
Now, a section named "Seeding and independent replications" could (not necessarily) contain useful informations about your problem ?
Have fun reading, and since you're at it, look at the rest of the manual too. It could be useful in the future.
T.