dada2 piple line problem (Dereplication)

Hi All,
I’m trying to use the DADA2 pipeline in the galaxyuse.
I have a problem with the Dereplication step.
There is no Dereplication step in the DADA2 tool set .
In the “dada2: mergePairs” , there is (derepF/ derepR) files to be enterd.
If someone has successfully completed the DADA2 pipeline in the galaxyuse can you kindly share the information with me ?

Thanks in advance

On which galaxy are you working? On I see the following text:
despite the parameter name the sequences don’t need to be dereplicated