@Damien2 Unfortunately, we dont currently offer an online lab environment where you can configure and make changes to the dashboard. However, we do provide read-only demo environments. In these environments, you can explore most features and go through the entire configuration process, although you won't have the ability to save any changes.
As @alemabrahao mentioned, you can the access to our live read-only demo environment via dcloud.cisco.com.
For Cisco partners, here is the short link to the demo. https://cs.co/mlp
For Customers, the short url is https://cs.co/cmp
To read more details about the demo platform, I would recommend this post.