Instant access refers to provisioning a read/write snapshot of a virtual machine backup to your VMware environment, with the storage hosted by the PowerProtect DD system the backup resides on.
Using PowerProtect Data Manager, it’s a trivial operation to perform instant access on multiple virtual machines simultaneously, which is useful if you need to start several systems for testing.
I’ve put together a video demonstration showing how you can do it. (Be sure to change your view settings to 1080/HD, or click through to the video on YouTube to see it in full resolution.)