I am currently playing a campaign as Celicia with only VeF addons.

I need to curtail the burghers but I am lost on how to decrease their influence so I can gain positive prestige to calm down my disloyal vassal. I have looked in the realm management menu but no success. I skimmed the wiki and did not find anything specific to that issue. I am not sure realm management is where I lower influence but any help with this problem would be appreciated.