Now I am in the taxonomy assignment step. Do you have any tips or link to tutorials in which classify-consensus-vsearch is used?

Hello!

Check out the documentation for classify-consensus-vsearch. It's not a full tutorial, but you can follow the other tutorials and use this plugin instead when you get to the feature-classifier step.

You could take a look at this test data on GitHub, or the RESCRIPt tutorial which discusses the database formats in great detail.

Let us know if you have any questions,