As the "Using the Condition Builder" section (where that text is from) of VoiceAttackHelp.pdf mentions, you can use the "Begin a Conditional (If Statement) Block" action to create conditions.
That action is documented in the "'Begin a Conditional (If Statement) Block'" subsection of the "‘Other Stuff’ Screens" section.
The "Add Else If to Conditional Block" action is documented a ways below that, in the "'Add Else If to a Conditional Block'" subsection.