Changes to your appetite are prepared as a draft and only take effect once approved.
Steps
Open Assessment → Risk Appetite.
Choose a starting point: Recommended, Balanced or Custom. Each shows how many units would be outside appetite.
To set levels yourself, choose Adjust individual risk types and pick a level for each.
Optionally write an appetite statement for each risk type, for board reports.
Watch the live preview: the outside-appetite count updates as you change things.
Save the draft.
The approver (usually the tenancy owner) reviews it and clicks Approve. The new version is in force from then on.

Annual review
Your appetite should be reviewed once a year. The review date appears on the Calendar. If nothing needs to change, approve without a draft to record the review.
Who can do what
Preparing a draft needs permission to edit the appetite (the owner and administrators by default).
Approving needs permission to approve it (the owner by default). Conform support staff can never approve.
Every approved version is kept.