Easy Install installs all files from ClarisImpact, but the full set of Flow Chart Symbols is not automatically available.
Following is an explanation from the Read Me file included with ClarisImpact:
The "ClarisImpact Color Styles" and "ClarisImpact B&W Styles" folders contain a second set of Flowchart files located in the folder named "Full Flowchart Styles". These files contain the same Basic and Computer Network model and element styles that are in the first set of files and include the rest of the style families - Business, Deco, Informal, International, Modern, and Traditional.
To use these styles, replace the "Flowchart Symbols" and "Flowchart Style" files in the "ClarisImpact Color Styles" or the "ClarisImpact B&W Styles" folders with the files in the "Full Flowchart Styles" folders. Note: if you have customized the original files, rename or make a copy of them before they are replaced.