Plugin visible only to admin -> add editor

look into this plugin
https://agapetry.net/news/introducing-role-scoper/

I’ve read a guide about capabilities ( https://codex.www.ads-software.com/Roles_and_Capabilities ) and I’ve understood that ‘8’ means ‘administrator’ so I’ve edited the mod and change the value linked with ‘add_menu_page’ to 5 (editor) and now the menu is visible also by the editors ??

Excellent. The last thing about changing the number to 5 in the administration php file of the plugin really works. Now editors can access to the plugin settings.