Editing Minyan (section)

=== Joining together for a minyan: ===
In order for a minyan to be properly established according to halacha for saying davar shebikedusha (holy matters) that cannot be recited with fewer than ten, the participants need to be in the same room without the separation of a doorframe, even if they do not see each other.

According to certain opinions, it is possible to combine a minyan even when people are standing in separate rooms but can see each other.

When there is already a minyan joined together, anyone who sees or hears them can join with them and receive the reward of tefillah b'tzibur (prayer with a congregation), unless there is a public thoroughfare, something unclean, or avodah zarah (idolatry) separating between them, in which case the matter depends on a dispute among poskim. Additionally, a person who cannot for some reason go to the synagogue and pray with a minyan should try to pray at the time when the congregation is praying.

Regarding including Jews who are not Shabbos observant in a minyan, the Rebbe responded that as long as there are no valid witnesses according to halacha who testify to this, there is no impediment to including them in the minyan.