Compilation
Are you using the Groups feature? Refer to this.
Are you using MO2? Be sure to read this before.
Get started
You have four ways to get started.
Drag and Drop
Drop any .psc
file into the app.
Search for files
Use the "Search scripts" button at the top. Then select all psc files you need to compile.
Recent files
Check Recent files feature.
Groups
Check Groups feature.