Are there any rules and permissions to be aware of when using evidence portfolios? 

The following rules and permissions apply when using an evidence portfolio:

• To enable the evidence portfolio feature, select the Enable user profile evidence portfolio permission in the Advanced tab of the Higher Admin Panel (HAP). 
• Only a manager can see the evidence portfolios of their reportees. 
• Managers can view, upload, and approve content in their reportees evidence portfolio. 
• A reportee cannot see the evidence portfolio of their manager. 
• Ordinary users cannot see the evidence portfolio of another user.
• You can give a user the permission to view every user’s evidence portfolio across a company instance.