There are some peculiarities and exceptions regarding the sharing model that you should be aware of.
The following are the peculiarities and exceptions regarding role hierarchy-based sharing:
- Contacts that are not parented to any account are inherently private, so they are visible to their owners and administrators. For this category, contact sharing rules are not applied.
- The same happens for notes and attachments with the Private flag enabled, which are visible only to the user who created them (and administrators).
- Events marked as Private are only visible to their owners and administrators.
- Role hierarchy is effective on users above them in the hierarchy, but only if they have the Read or Edit permission ...