Additional meta boxes

Hi,

I would like to remove some meta boxes for a specific user, as show in your wesite article : https://www.role-editor.com/documentation/block-meta-boxes-for-role/.

The thing is that when I reach the Additional modules tab in Settings, the module isn’t here, as you can see in the following screenshot :

I would like to know how to do to solve that and be able to edit the meta boxes

The page I need help with: [log in to see the link]