Account Attributes in Campaigns

Hello, I am working on an issue regarding the import of account attributes into data shown in a campaign to a reviewer. I have multi-valued non-entitlement data from a non-authoritative source that I want to display to a reviewer. In creating campaigns I am only able to see ID and Role information from the source. I was able to map this attribute onto the authoritative sources identity profile and change the public identity config to display this attribute when hovering over the user’s name in the campaign view, however it does not appear that the mapping allowed for multi-values to be used ( I only see the first value). Is there a way to change the data presented to a reviewer in a campaign such that they can see detailed account data from the source? Alternatively is there a way to map multi-value data onto the identity profile that will then be displayed as such?