Can i write "having had him seat on chair,he started telling story". here first have is participle and second had is used as causative.is it correct to write
_Having had him sit on a chair, he started telling a story.
People are divided over whether or not that is acceptable. Some call it a "dangling participle construction", and object to it because the subject of the participle having is clearly not the same as the subject of the main clause he.
Other people use constructions like this without any problem.
The use of "having had" may be correct. However the sentence contains multiple other errors. I think you meant something like
Having had him sit on a chair, he started to tell a story.
This would appear to be a dangling participle. The subject of the main sentence is "He", this is also the implied subject of the participle phrase. But that doesn't make sense. This could be fixed by some kind of passive construction, but at this point you should realise that the sentence has become unreadable. You need to rephrase completely, probably using two or more sentences.