There are three types of personal information which any user can go in and update via self service.  

To update personal details, please go to:

Self service>My personal details

Here, you can change the following:

1. Address,
2. Bank Details,
3. Emergency Contact Details. 

Please note: Whilst updating this information does not require approval, updating Address and Bank Details will generate a notification to your HR department notifying them of the change.