I'm creating a UserControl and found a couple attributes that modify the way public properties appear on the IDE. I want to create a public property that can be expanded into sub groups much like the way the "Location" property of a form can be expanded into "X" and "Y". I'm sure there is an Attribute that does this but after search everywhere I cannot find a list of these attributes, can anyone help?

Well, you do not do that with just an attribute.

You have to create a TypeConverter.

Check out the MSDN

Cheers