If you go to the contact card of the person and click on the Clio Connect tab. Next, you will see a list of the items you are sharing with this contact. Click on the "Stop Sharing" link to remove their access to the item. Click OK when the warning message appears to stop sharing the resource.
Click on the "View details" quick link below the document description of the item being shared.
Next, click on the "head bust" icon in the Document Details.
Then click on the "⊖" button.
Finally click "Yes".
Navigate to the appropriate bill and click on the Share quick link for the shared bill.
Then click on the "Stop Sharing" link.
From that specific Matter page, click on the Share button in the top-right corner.
Next, click Stop sharing beside the person you want to lose access to the Matter.
When you delete a contact, access will be revoked to all items that were shared with that contact.
Navigate to the appropriate Contact Card and click the "Delete" button.