If there are exactly ten men in the minyan by krias hatorah, and one of them leaves in the middle of an aliya or in between aliyos, what should they do?

As long as there are six men remaining, the kriah should be finished, followed by kaddish.

If it is a day that there is maftir and haftorah, no one should be called up for maftir, but the haftorah should be read without the brachos.

This applies is as long as there were ten men present by the first bracha of the kriah.