Select one or more objects and press F7 to make them invisible. Press F7 again and they will switch to visible.

Tip: You can select multiple objects in the tree or the screen by holding the Ctrl key.

Video: https://www.youtube.com/watch?v=MuVjIkWPv1Y&index=7&list=PLjiA6TvRACQcNitucNzKjV9_V3UFnSich.

Show or Hide Objects (F7)