We do not directly manage the opportunities that are a displayed in our opportunity search and are not responsible for their content. In order for opportunities to be updated or removed you would contact the originating organisation that published the opportunity.
Details of all local offices can be found here.
Alternatively you can click on the link for Report this opportunity on the opportunity detail page.
If your opportunity was published using the Volunteering Zone you would need to contact the individual within your organisation that has access.