I think you must uninstall ADNM cosole than install ABP.

You can find some information to install ABP here
https://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=992&nav=0,1,23,654
and here
http://files.avast.com/files/documentation/quick-start-guide-business-protection-en-ww.pdf
http://files.avast.com/files/documentation/business-protection-plus-administrators-guide.pdf

ABP FAQ
http://forum.avast.com/index.php?topic=82548.0