With JavaScript you can create a function for applying a template. All you need is a template file, insert by the user, and the grid cell where the template should to be applied. Downloading a template file is possible from the save template dialog in trueChart.

example

JavaScript implementation for applying a template

const applyTemplate = async (templateFile, cell) => {
    const dataMap = await trueChartInstance.TemplateManager.generateDataMap(template);
    // if you like to edit the data mapping, here is the place to go
    return trueChartInstance.TemplateManager.applyTemplate(template)
}