Can I use infinitive clauses in that way?
1-) These terms are important for me to work here happily.
2-) These terms are important to work here happily.(If it is obvious that I am talking about myself, can we omit "for me"?)
3-) These features are necessary for this game to work properly.
4-) Body language is necessary to communicate with someone correctly.
If this usage is correct, could you please explain what these infinitives' functions are?
I don't think that the examples 2-4 are adjective complements because I have never seen a source/website/book saying that "necessary and important" can have infinitive complements. (It is important/necessary to do something) is a different structure that is not the complement example, which is not the case.)
Finally, what are your thoughts? Are they grammatically OK?