You are able to customize select New Home widgets within a layout template. Instructions can be found here:
https://experienceleague.adobe.com/en/docs/workfront/using/administration-and-setup/customize/layout-templates/customize-new-home-layout-template
One note, if you have multiple layout templates that need the same field, each template would need to be updated individually as there is currently not a global setting for custom fields to apply to all templates. We spent quite a bit of time updating all our layout templates across many teams to ensure they have the same custom fields visible, but it helped with our adoption.
