After paragraph, the Choices block will, most likely, be the most used. It's what allows for player to go from one node/chapter to the other. It can be accessed through the fifth button in the add block buttons area.
When clicked the following options will be presented.
The text for the choice being showed;
The node to jump to when this choice selected;
Button to create a new child node to jump to;
Only show the choice if the player has in inventory a specific item;
Only show the choice if the player has visited a specific chapter;
Only show the choice if the player has NOT visited a specific chapter;
An action to be triggered when selecting this choice (see Functions);
The amount to be inputted to the target (can have negative values).