On the Control Panel click the Save Button and you get this:

 

 

The criteria you used to make the Bundle have been remembered.

 

Either leave that description or replace it with your own, then click Save

 

You will get a screen asking about attachments (because some of the items in your selection have attachments).  Ignore this for now so just click OK - and your selection will be saved as a new Bundle.

 

Now you can look at your bundle in the Bundles screen. Click here.

 

[You can read more about Attachments here]