How do you create a new custom table tied to case type?
I found a work around for this issue.

For each case type description field, I entered the node id to the corresponding case activity Webform.  For example, for Case Type A there is a separate Add Activity Webform (node id 1).  So for the view I added the case type description field and rewrote it to Add New Activity and made it a link to http://example.com/node/[description]?cid2=[id1].