You can edit an insurance policy on a matter from the Parties component.

How to Edit an Insurance Policy

1. Navigate to Matters > [Matter Name]. 
2. Select the Parties tab. 
3. Select a Party.
4. Scroll to the Related to this Matter section > Insurances (Policy Holder).
5. Choose one of the policies listed and select its Dropdown > Edit.
   
6. Make updates.
   
7. Save.