If you expect to have more than a few dashboards in the Time Series Data Service at some point later, it makes sense to take advantage of all the organization and retrieval options from the start.
This includes the naming of the dashboard, the description, but also adding tags, for example.
Open the dashboard to which you want to add additional information and click on [gear icon]. Now you are in the settings of the dashboard and can add names, descriptions or tags, as well as change or set up the folder of the dashboard. You can also, for example, if you run your dashboards on a “big screen” disable the edit function, so that the panels are not accidentally moved and the image is no longer filled properly.