The default settings dialog box is what comes up, if you double click on the tool in the toolbox. It works the same way for every tool, including the MEP tools. It is explained in detail here:
Note that the MEP tools will only appear in the toolbox if you apply the MEP Work Environment.
The picture you are referring to is from a really old version, the dialog has changed since. The apply button has been removed, and now you simply have to click the icon of the object on the left to apply its settings to the default settings on the right. Thanks for bringing our attention to this, we will update this picture.
Daniel Alexander Kovacs
Technical Support Engineer
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