Welcome to the LMMS Wiki! Here you'll find the documentation, tutorials, guides, resources, and much more.
Manual [wiki] [pdf] (for v0.4.12)
How to Report Bugs
Developers (Wiki on GitHub)
Creating a Theme
Theme Porting Guide
After having selected notes in the Piano Roll, SHIFT + Drag will stretch notes from the right edge, this will scale the selected group of notes, and everything after will move as well.