Nesting WHEN- THEN statements
It helps to think about separate WHEN-THEN logic blocks as having OR operator between them. If any of the separate condition blocks becomes TRUE then the action within WHEN-THEN STATEMENT is executed.
In the sample above the TASK 2 is shown when the team is on TRACK 1 OR when they answer TASK 1, even if they are not on TRACK 1. Please note that two WHEN-THEN blocks do not need to be connected. The same applies also if they are single blocks.
When nesting one WHEN-THEN logic block within another WHEN-THEN logic block then there is AND relation between the two blocks. The innermost WHEN-THEN condition only becomes true if the outer WHEN-THEN statement and inner WHEN-THEN statement are both TRUE.
In the example above the TASK 2 is only shown when team is on TRACK 1 AND the have answered TASK 1.
The same can be achieved using AND operator like in the following sample.
However using nested WHEN-THEN blocks will make it much easier to include several compound conditions when one condition remains unchanged. To achieve this you can nest multiple WHEN-THEN blocks within outer WHEN-THEN block or nest in several levels.