To batch update fulfilment orders, 

1. choose one or more fulfilment orders (note 1)

note 1: batch update is possible only when orders selected are eligible to the same 'next status'. That is 'Ready to Pack' in this example.

2. confirm the change

3. check if the batch update completes (note 2)

In case there is error, you can click the download icon to read the detailed status