When working with new packages, in particular very large ones, or when performing an action with a wizard that insists on adding distribution points (e.g. Software Update download) I find it helpful to use a “dummy” Distribution Point Group.
The reason for this is simple. For example, I want to create a new Software Updates deployment package that will contain a lot of updates, and using the wizard it requires me to select a target to distribute this new package to. I plan to add other updates or make further changes so I don’t really want (or need) it to be sent to an actual DP just yet. This is especially true when creating temporary update source content (another issue for another post).
To work around this, I just create a “Blank”, or testing Distribution Point Group with no members. This DP Group is perfectly fine to use in the wizard and allows the package source to be created and downloaded without then needing to wait for it to be sent to the DP.