storage_thumbnail/security/ir.model.access.csv
id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
access_storage_thumbnail_edit,storage_thumbnail edit,model_storage_thumbnail,base.group_system,1,1,1,1
access_storage_thumbnail_read,storage_thumbnail read,model_storage_thumbnail,base.group_user,1,0,0,0