Conclusion - Meat during the Nine Days
Question
Answer
Hello
The part related to your question was the second part in the Mishnah Berurah that I brought (Mishnah Berurah, Siman 551, Subparagraph 73) even those who did not study with them if they came and went at other times due to friendship. This means that only those who would come during the rest of the year for the conclusion can participate and eat meat at the conclusion. Therefore, one cannot come to a synagogue not related to you to participate in the conclusion and eat meat.
Regarding your question, what 'properly' means, it refers to what is written there that one should not advance or delay the conclusion to the Nine Days to eat meat, but if in the regular order of study it happened to have a conclusion, he can do it with meat and wine.
Source
Mishnah Berurah, Siman 551, Subparagraph 73.