[pmwiki-users] How to unprotect specific -Talk page in groupA and groupB

[ABClf]

Hello,

I would like to give visitors the right to read/edit *-Talk pages in a
bunch of Groups.
I didn't find how to get it in the doc.

as of now, my config has a site wide basic edit protection :
$DefaultPasswords['edit'] = pmcrypt('mypassword');

Thank you.