Pressing de Jure Ducal Claim

[Captain Gars]

Damn I feel lost... knowing the original CK isn't much help here. o

Starting as the king of France, I can press de Jure Claims for:
Vivarais, for Duke Guihèm IV of Toulouse and (owned by Prince-Bishop Girard of Vivarais)
Maine, for Duke Folques IV of Anjou (owned by Duke Robert I of Oxford)

How do I do that? What UI element?

Declare a war against Prince-Bishop Girard of Vivarais or Duke Robert I of Oxford (most likely they are not independent which means that you will have to declare the war against their top liege instead) and click on which of the claims you want to use as the couse for war.

 

[Captain Gars]

A-ha - thanks ooo
(relatively worthless in this case then as war with England or the Empire is out of the question for now...)

Patience, all in good time... England can often end up in turmoil. That's when you stab them in the back and claim what's obviously yours!