Mel picks up Maggie from a military-themed party and later Maggie is kidnapped and brought to a party to celebrate her acceptance into Kappa in pilot episode. Maggie visits Parker at his frat house and finds him injecting himself with some sort of drug in his room in episode 1x07 "Out of Scythe". Maggie parties with Lucy and finds herself talking to Parker who is bartending in episode 1x12 "You're Dead To Me". Mel attends the toga party while in Maggie's body and another two statues appear in a bedroom in episode 1x15 "Switches & Stones".
Mel is hanging up posters for the protest when she is greeted by Harry Greenwood, the new head of the department who is replacing her mother in pilot episode. Macy meets with Harry to interrogate him with the truth serum but realizes too late that it isn't working in episode 1x02 "Let This Mother Out". Mel is leaving class at night while in Maggie's body and is kidnapped for a rush party in episode 1x15 "Switches & Stones". Mel and Harry visit Maggie to give her the memory-restoring potion but things go wrong when Macy arrives setting off the curse in episode 1x22 "The Source Awakens".
Harry is shown a memory from his forgotten past of him robbing a bank and then being arrested in episode 1x10 "Keep Calm and Harry On".
Mel helps organize a protest of Professor Thaine outside the building where his lab is located in pilot episode. Mel and Maggie are given a vision of 1989 to learn what happened to cause Brenda to become a ghost and they spot their mother who is pregnant with Macy in episode 1x06 "Kappa Spirit". Maggie runs into Mel walking with Niko to Tessa's apartment while she is on her way to meet Parker in episode 1x19 "Source Material".
Maggie and Mel head off for a night on the town while their mother stays home. Later, Macy is walking down the street with Galvin when she spies a house she seems to remember in pilot episode. Mel comes home and runs into Maggie outside who reveals her conversations with the Ouija board in episode 1x02 "Let This Mother Out". Maggie talks to Mel on the phone while walking home and later Mel runs into Macy on the porch in episode 1x03 "Sweet Tooth". Upon returning home, the Charmed Ones are visited by several of the magical folks they had previously saved who thank them for saving the world and ask them to help fill the vacuum left by the loss of the elders in episode 1x22 "The Source Awakens".
Mel is putting up posters for her rally when Cam shows up and tells her she can't do that in pilot episode. Angela Wu follows Macy across campus but is interrupted by Mel who asks to talk in private in episode 1x03 "Sweet Tooth". Macy has a vision of a student being turned to stone and then next morning she finds a statue on her morning run in episode 1x15 "Switches & Stones".
While talking over coffee with Niko, Mel repeatedly finds time around herself freezing in pilot episode. Mel gets to know the new Niko over coffee and the next day Niko gets a text from her saying goodbye in episode 1x12 "You're Dead To Me".
Niko calls Mel about meeting for lunch and later Mel tries to get Niko out of the building while she is under the influence of the truth serum in episode 1x02 "Let This Mother Out".
Maggie finds Brian at his work and tells him that she only wishes to be friends in the future in episode 1x02 "Let This Mother Out". Mel freezes time to watch Niko only to realize that Niko is still wearing the magic-blocking ring she gave her in episode 1x22 "The Source Awakens".
The sisters take Angela Wu to the building where the homecoming floats are stored to perform the exorcism and Maggie is forced to distract Parker who has stopped by to drop off some fireworks in episode 1x04 "Exorcise Your Demons".
Niko talks to the shapeshifter posing as an FBI agent and then heads off with Mel in episode 1x05 "Other Women".
Mel accompanies Niko to Trip's grave and Niko tells her that she doesn't believe the narrative of him being a killer in episode 1x05 "Other Women".
Niko finds evidence in Trip's fishing cabin but before she can leave the shapeshifter posing as Trip attacks her, steals the evidence, and lights the cabin on fire with her inside. The cabin was added for filming. in episode 1x05 "Other Women".
Source: Ely_Sky — Twitter
Niko talks to Mel on the phone and something Mel says reminds her of Trip's fishing cabin in episode 1x05 "Other Women". Mel is accompanying Jada to meet her parents when a black van pulls up and some goons bearing crossbows jump out and shoot at them in episode 1x13 "Manic Pixie Nightmare".
Source: What's Filming — Twitter
Lucy lights a strange looking candle to help her meditate and accidentally releases the ghost of a former Kappa sister in episode 1x06 "Kappa Spirit".
Maggie and Mel talk to the Kappa who kicked out Brenda and learn the truth about who she was and how she died in episode 1x06 "Kappa Spirit".
Parker asks Maggie out on a date now that Lucy has moved on and later Macy meets with Galvin to fire him but cannot do it in episode 1x07 "Out of Scythe". Macy finally meets up with Galvin to talk to him about the whole witch thing and later Maggie runs into Parker and has trouble keeping her feelings in check despite the spell in episode 1x10 "Keep Calm and Harry On". Maggie stops Mel from stalking Niko on Instagram and then Lucy invites Maggie to a party. Later, Maggie tells Parker that she no longer hates him in episode 1x12 "You're Dead To Me".
Harry is tried by the Elders for his relationship with Charity and stripped of his powers in episode 1x17 "Surrender". Harry and the sisters set up an ambush using the remaining Elders as bait but are caught off guard by Hunter's vicious attack in episode 1x20 "Ambush".
Elder Cate Monroe is leaving a meeting when someone gives her a cup of poisoned coffee in episode 1x20 "Ambush".
Maggie auditions for the school's a cappella group and under the guidance of Mr. Morales attends several rehearsals after being accepted in preparation for the big show in episode 1x11 "Witch Perfect".
Mel is taking out the trash when Jada surprises her and tells her about the group she works for in episode 1x08 "Bug A Boo". Noah is waiting outside for Maggie and Macy when Chloe shows up, asks for his phone, and leads him into traffic in episode 1x13 "Manic Pixie Nightmare".
Mel learns that Niko is engaged while heading off with her and Jada to stop the witch hunters in episode 1x14 "Touched by a Demon".
Galvin tells Macy about his adventure while they are out for a walk and she tells him she doesn't want to get rid of her demon side in episode 1x18 "The Replacement".
Macy runs from the demon infesting Galvin and is rescued when her sisters arrive with Tessa in episode 1x18 "The Replacement".
Galvin calls everyone to the hospital for help identifying the strange outbreak and while there Mel sees Niko being wheeled passed in episode 1x21 "Red Rain".
Harry, Mel, and Maggie investigate the facility where Parker was being held and Maggie uses her powers to read the history of the space in episode 1x21 "Red Rain".