After the user-defined fields (UDFs) are defined in Open Plan, you can then add these fields in PM Compass using the Source Fields tab under the Schedule area on User Defined Data form.
To define UDFs:
In Open Plan, click Tools ยป User Fields.
In the User Defined Fields dialog box, click New.
In the New User Defined Field dialog box, enter or select values in the appropriate fields, and click OK.