Deploy a WebPart in different custom group

Elements.xml:

<?xml version="1.0" encoding="utf-8"?>

<Elements xmlns="http://schemas.microsoft.com/sharepoint/">

    <Module Name="WebPartPopulation" Url="_catalogs/wp" RootWebOnly="TRUE">

        <File Path="TheWebPart.dwp" Url="TheWebPart.dwp" Type="GhostableInLibrary" IgnoreIfAlreadyExists="TRUE">

            <Property Name="Group" Value="Custom" />

        </File>

    </Module>

</Elements>

 

Change the Value="Custom" to anything you want the group header to be.