Premiere Elements (any version) does not have "Synchronizing Audio and Video with Merge Clips" feature that Premiere Pro has.
I am assuming that you are referring to the following
A just in case mention, according to Adobe documentation, Premiere Elements has a synchronize linked clip feature. But, I have not found it to work
as advertised for several versions now.
See Synchronize Linked Clip section in the following
I posted a thread about this a while back related to 9, 10, and 11. Never got any feedback on that.
But, I know first hand, it has not worked for me as described or otherwise 9 through 13 on Windows 7, 8, or 8.1 64 bit.