Thanks to this mod, you can save the lives of survivors from Mount Tanner at the beginning of the game, including Lily Ritter's father. As soon as you reach the ranger's house at the beginning of the game, there will be a cutscene of a conversation with Lily's father, after which all the survivors will start following you and the task "Go to the church" will appear. Maya will also spawn next to you and go along with you. If she's not around, don't be alarmed. So she's just waiting for you in the church with the others. Upon arrival at the church, the survivors will still follow you. After Lilly's tour of the base, you must exit the game and enter it again so that the script is interrupted and the survivors stop following you. That's all! Wendell and Sheila will become full-fledged members of your community, for whom you can play. Lilly's father will not be allowed to play, but he will live with you and will stay alive until the end of the game. How it all looks in practice - I showed on the video. Just copy folder "libs" to folder "Game" in the root  folder of the game. That's it

P.S. To make your life much easier, download the mod that repairs the bridge on Mount Tanner. The exit from the mountain on the cliff will be closed due to the fact that I had to edit some game scripts, and it is very difficult to jump over the bridge on an old pickup truck