When adding a KPI Ticker part to a web dashboard, users must select the KPI instance they wish to use from the list. However, only the first 100 KPI instances are available to be selected, and there is no way to filter this list. Users are not able to select subsequent KPIs to include in their KPI Ticker.
We are currently evaluating this issue and will update this article when we have more information. In the meantime, you can name KPIs that need to go into dashboards with a special character at the beginning of the name so that they go to the top of the list, alphabetically.