Hi Beth, welcome to the Community and thanks for posting 🙂
You can check out this Help Center page on how to add/remove columns from the Table portion of the Gantt Chart. However, Custom Fields are not visible on it, so you can't add them to the Gantt Chart Table. I can see that you posted on the Product Feedback section with this question as well, so let's see how other users vote and comment on it 👍 The Community team will comment on the thread when we have an update on this.
Lisa Community Team at Wrike Wrike Product Manager Wrike DiscoverでWrikeの専門家になりましょう
Lisa Wrike Team member Wrike DiscoverでWrikeの専門家になりましょう