Hello,
The enterprise edition comes with a custom indy version because the standard indy version doesn't implement several features required by webpush. But there is no need to change anything in your IDE, both versions can work together because in the custom indy version, the indy units are renamed (start with "sgc"). So if you are using indy in other projects, you can remain with the standard indy version that comes with delphi.
Kind Regards,
Sergio