Hierarchical display for TensorBoard

System information

• TensorFlow version (you are using): 2.1
• Are you willing to contribute it (Yes/No): Not a frontend guy so I don't know if I can help.

Describe the feature and the current behavior/state.
I'm using TensorBoard to display an optimisation process with two stages, lambda_sweep and counterfactual_search, so I used the name argument to the summary ops to display the plots for the two stages separtely:

I would like this behaviour to be hierarchical, that is, other drop-downs would appear when clicking one of the stages. Instead, I get the follwing:

I was wondering if there is any way to extend the first level logic so that, for example, under counterfactual_search I get another page I can click on that is called lambda and so on.

Will this change the current api? How?
I don't think so, it sounds more like a frontnend feature to me?
Who will benefit with this feature?
All tensorboard users.

Any Other info.