Floating Dynamic Legend
The Floating Dynamic Legend tool allows users to view the legends of all active map layers in a dedicated panel.
Note
The Floating Dynamic Legend plugin is not enabled by default. However, it can be configured within application contexts if needed.
By clicking the Floating Dynamic Legend 
button available in the Side Toolbar, users can view the legends for all layers present on the map.
The legend displayed by the Floating Dynamic Legend works in the same way as the "Dynamic Legend" option, which can be enabled for each layer from the TOC as described in the Layer Settings section.
An example can be the following: