User Activity

Friends any idea..how do we display images dynamicaly in catalog item..Ex when I select device it should also change image at the place of test image..I tried with UI macro but not working.  
Friends, I have enabled Risk managemnt plugin in my Prod instance..I want to assign below roles to users sn_risk.admin sn_risk.asmt_creator sn_risk.manager sn_risk.reader sn_risk.user etc to team members..are these roles chargeable? Will it impact it...
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