Is there away to remove the chat with just 1 person.. individual chat ?
Click on Tools > Options > IM & SMS and the Clear history button.
Not by using Skype application, but this is possible with 3rd party programs as e.g. SkypeX:
With very little technical experience, you can also edit your main.db chat databse:
arghh this question drives me mad and I have tried to help a couple of other users who have mentioned the same problem. Why o why havent skype added this what appears to be a basic function is beyond me but the only solution seems to be from a third party application like the one mentioned above (which was still in testing the last time i looked) or chatzap (which is what I use and works great) found here iscreamsoftware.com.