She has a good relationship with the student council members. As the president, she spends most of her time with student council members/committee. She also volunteered in helping the council in selecting the next President candidate. She also actively participates in various committee as well (cultural committee, athletic committee) and contributes her help to some extent.
Even after their retirement from student council and busy schedule for their incoming entrance exam, they seems to participate and enjoyed valentine chocolate in the pre-valentine event held by both Sobu high and kahin sogou high schools.
Haruno is her former upperclassman whom she greatly admires. She plays in a band along with her as well. Haruno also seems to know Meguri and her thinking well as she predicted that Meguri would ask Yukino to succeed her. Even though Meguri never said anything like it, she did hope for it which she mentions to Hachiman when he helped her vacate student council room
Isshiki Succeeded Meguri as student council president. Meguri was willing to help Isshiki as she took her to the service club for advice of not winning the election and also offered her help regarding student council duties, after Iroha became the president. But Iroha seems to have hard time dealing with her being to be a pretend air head and hence avoid asking any help from her claiming that she did not want to disturb her, as Meguri was preparing for final exams.
Meguri requested the Service Club to help her make the Sports Festival merrier after witnessing their help in the Cultural Festival. The Service Club accept her request and they attended the athletic festival committee to make the Sports Festival more interesting.
It was later hinted that she expected Yukino to succeed her as the President of student council, Yui as the vice president and Hachiman as the general affairs, and she will visit them even after her graduation to discuss their past fun moments but to be in vain.
She recognize her as Haruno's sister in cultural festival committee and recommended her to be the cultural festival committee chair person,but Yukino turned her down. She shows concern for Yukino, when she takes on most of the work for the Cultural Festival.
She is among those who hold Hachiman is high regard, and acknowledges his leadership skill. She is also aware of Hachiman true motives of provoking Sagami on the laboratory rooftop, and even though she was disturbed by it, she still views Hachiman in a positive light. Megumi was relieved when Hachiman was accompany Yukino in times of athletic festival, so things won't go out of hand.