When a timesheet orientated placement (contract or temporary) is made an end date will be set. However, there will be occasions when the role is extended.
You might decide to just edit the end date of the placement, or you might choose to keep an audit trail of any extensions by using the Extend button in the Action Bar.
When adding in an extension you can add in any notes, perhaps explaining why the role is being extended.
Once an extension is added you can keep track of this via the Extensions tab, which will only be available after the first extension is added. You can then add further extensions as required.
Extensions operate separately to the rates and shifts on a placement, so if there is a pay/charge change or new shift etc with the extension this will need to be managed via the relevant areas. Please see the related articles for more information.