Hi @anaromero,
Thanks for your question. Currently it is not possible to customize the reviewer recommendations in the settings, although this can be done with the Custom Locale Plugin, as described in this thread: Change wording of reviewer recommendations
This has also been filed in our issue tracker at Customizable Reviewer Recommendations · Issue #1660 · pkp/pkp-lib · GitHub. Please watch there for details.
I hope this helps!
Kate
PKP Team