When Fog of War is on you need to clear sections of it manually using the reveal tool. This is to prevent players from seeing those areas. The reveal tool can be found on the toolbar on the left side of the map.
Here are your available combinations:
Fog of War (FoW): Players cannot see areas that are covered by FoW. Use the reveal tool to reveal specific areas.
Dynamic Lighting (DL): Players cannot see areas that do not have lightsources set for them. To set a lightsource you either set it to 'all players' or you set a specific player to control it. You will need to draw barriers to the light on the Dynamic Lighting layer.
Note: if you are playing a game with things like Darkvision and Low-light vision I can also explain how to mimic those abilities using Dynamic Lighting.
Fog of War and Dynamic Lighting combined: In order to see an area that area must be cleared of FoW AND they must have a light source set so they can see it.
How to use both FoW and Dynamic Lighting together for maximum control:
1) Checkmark Fog of War and Dynamic (you can checkmark update on drop if you desire, I dont).
2) Draw lines on the Dynamic Lighting layer. These lines block light
3) Place lightsources on the token layer.
4) Turn Fog of War on.
5) When players are about to go into a new area, clear the Fog of War for that area using the reveal tool.
6) When players open a door, go to the Dynamic Lighting layer and remove the 'door' light barrier.
I hope this helps.
- Gauss