Click the keyboard icon at the top of the guide to open a Keyboard Shortcuts pop-up window.

Use these (and others listed in the KeyBoard Shortcuts window) to quickly navigate while creating guide steps:

Return: Next bullet or insert new bullet.

Shift + Return: Previous Bullet or Insert Bullet Above

Ctrl + ]: Indent bullet.

Ctrl + [: Unindent bullet.

Ctrl + D: Delete bullet.