I am not sure if it is worth me posting as you have ignored my feedback when I tried to explain UVB prior to you in great detail. But since you keep asking for detailed explanation here it goes.
Fogging is just another form of hydration. This is where people get confused. They see 80-100% for night time humidity and think this is required. If you are wanting to add hydration via fogging then yes higher humidity is needed with this method. But you also need airflow to avoid stagnant air that they are breathing in. When done improperly in temps too warm chams develop respiratory infections. Ideally you want temps to be low anyways at night. They need a good temp drop regardless of your chosen methods of hydration. This is an important health aspect of keeping chameleons. So if you are not achieving the low temps then you should not fog. Low temps that are ideal is 60-65. They say it is safe if temps are under 68 but I would still go for cooler temps then that for the simple fact you need the temp drop for them as this is actually a separate health need.
This is the thing about this hobby. Implementing things when you know parts and pieces is not always a safe thing. Fogging has become popular in the last few years. 5 years ago if you mentioned it then you were told you would kill your chameleon. This method is still evolving. You have to have all aspects running together. Which a lot of times means asking experienced members for advice. 9 times out of 10 new keepers will have missed something. For example your temps at night are not in the recommended range for a veiled chameleon. Night time recommendations are 55-65 F. So you take that and overlay it with fogging and they work together. But when you miss the temp requirement for the species and implement the fogging you have now created a hot humid environment. This not only raises risk of RI but raises risk of bacterial growth in the cage.
I want to mention there is such a thing as over hydrating a chameleon with fogging. It very rarely gets talked about. There is not a lot known on it other than it is another extreme and leaders in the hobby do not recommend it, but it can happen easily when you are blasting them with fog. Their urates go from having a form to being pure liquid.
Jannb keeps her chams very differently. All are free ranged. Her method of hydration is misting and a dripper running during the day. This is another way to properly keep a veiled and provide hydration. So she does not fog and therefor does not boost night time humidity to the extreme levels those do with fogging. You will find with certain things in this hobby there are multiple ways to achieve the same goals. Hydration is a big one that has multiple methods along with methods changing based on cage type, temps, and even your ambient household levels.
In your threads you seem to get frustrated and I have to say this is not the way in this hobby. It is ever changing and the information and recommendations change with it. It becomes a situation like having a job where you are constantly learning to keep up. If you are looking at old sites or even old threads they are not going to line up with the current line of thinking. In the last 5 years husbandry has evolved quite a bit. Larger cage recommendations, all live plants, hydration methods, UVB information and equipment, supplement guidelines, bioactive set ups, and Female specific care to reduce clutch size are just a few that I have seen dramatically change in the last 6 years since I have been in the forum. Having an open mind and listening to keepers that have the experience will give you the information you need to form an entire picture of what your husbandry should be to provide the best for your chameleon.