从其他文件夹中的批处理文件执行命令

I have 3 folders on same level (Folder 1,Folder 2 & Folder 3) inside a parent Folder named "MyApp" and my .bat file is in Folder 1. In Folder 2 I have my Angular app files and node server. Is there a way where I can write in my batch file to execute some commands ("npm start") the npm modules are in Folder 2. Something like thisI have 3 folders on same level (Folder 1,Folder