The Visual module attributes are limited to only below listed.
Days to Start
Release : 15.9.2
Component : CA PPM STUDIO
Currently customization in visual module in blueprint is not available , However you can raise this as idea in our clarity community .
Please follow below document to know how to configure visual module for OOTB attributes currently supported in blueprint.
Link to open Idea :- https://knowledge.broadcom.com/external/article?articleId=18799