بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ

Question:

During the Janaazah prayer does the Musallee (i.e. praying person) look at the place of his Sujood just as in the other prayers, or is that not obligatory? And what should he do if he missed more than one Takbeer of the Janaazah prayer?

Answer:

The Sunnah (legislated) for the praying person in the Janaazah prayer and other than the Janaazah (prayer) is that he looks at the place of his Sujood, so that neither absent-mindedness nor carelessness occurs in the prayer, and thus he (establishes) khushoo. This is better.   If he catches some of the prayer, then what he catches is (considered to be the first part) of his prayer, (and) this is better. And what he makes up is (considered to be the) last of it (i.e. the last part of his prayer).

If he catches the third Takbeer, he (should) make Takbeer and recite Faatiha.  And if his Imaam (i.e. the one leading him in prayer) performs the forth Takbeer, he performs Takbeer and sends salutations upon the Prophet (sallal-laahu-alayhi-wasallaam). And if his Imaam performs Tasleem, he performs Takbeer and then says, [اللهم اغفر له وارحمه]; then he performs Takbeer and (thereafter) the Tasleem.

source: http://www.binbaz.org.sa/mat/14073