BizTalk 2013 Business Activity Services installation?

Dear all,

I am a bit unsure about BAS in BizTalk Server 2013. Somehow those whole changes with SharePoint Services now being SharePoint Foundation, all this SSOM/CSOM problematic etc. is really confusing…

So I have SharePoint Foundation 2013 installed and it seems to work (at least I can use the administration and access the site). But how do I install BAS, since http://server/sites/bassite doesn’t exist? By what/whom is that installed? In the BizTalk Server Installation Wizard “Windows SharePoint Services Adapter” is greyed out, but according to Appendix B: Installing and Configuring Microsoft SharePoint Adapter that shouldn’t matter, since: “On the BizTalk Server, install BizTalk Server; do not check Windows SharePoint Services Adapter”.

How can I install BAS now on that machine, so that I can use A4SWIFT with it?

Thanks a lot in advance