Hi Mark,
We have tried to align the behaviour of the Thematic layers with the behaviour of the other layers.
Typically when you double click on a normal layer, you get the Layer Properties dialog. This is now also the case for Thematic Layers. This makes for example the access to the Layer Translucency identical for the different layer types. Earlier users were struggling to find this options for Thematic Layers.
To activate the Modify Thematic Map click on the small thumpnail next to the Thematic Layer.
![Thematic in Layer Control]()
Or even better use the THEME tab in the Ribbon and modify your Thematic Layer thru this.
![Theme Tab]()