Holding alt and moving will duplicate a part and leave it in the same position as the part you’re duplicating so that we dont have to keep readjusting every axis.
If you want to duplicate it in the same position there’s ctrl+d.
Wow. Yeah nevermind I didn’t know that existed
Yeah, do what echo said. Alt is used for selecting individual parts inside of models.
I didn’t know that existed either. As you can obviously tell I’ve done extensive research before posting