To edit a risk item, click on the edit mode on top right 

This will open up all the fields that is editable for edit directly in the view

To set the risk owner and responsible for action and due date, or upload/link attachments click on the arrow on far right on the row

This will expand with more settings

After all Required fields are set, the Send button will be activated and you can send the action to the selected responsible for action.

When an action is sent to a user, you will see in the status in progress

That user will now get a notification email  for the action to be performed as suggested

The responsible can now accept the action sent to him/her or reject it

On accept the responsible person writes down what he/she has done in the textfield

And then return response to the person that sent the action

The person that sent the action will now get the action performed back to approve or reject

On Approve the Residual risk and cost after action field is now visible and you can set the residual risk by clicking on the colours and set the new risk in the matrix.

After edit of the residual risk and save the Status will now show as closed in the index of the item

And the new residual risk is in the residual risk column