Question

Is it right if I say "All I need is to know when the meeting will be or should I say all I need to know is when the meeting will be instead"

Answer 1

Gd question

Both of them are correct, but the difference is that you change the emphasis when you make such a difference in a sentence  

كل ما أحتاجه هو كذا

كل ما احتاج معرفته هو كذا

شو الفرق بالعربي ؟ نفس الشي ( بهذا المثل)