Note: The join list to text rule is part of the advanced rules. If you cannot use this rule, please contact us to enable the advanced rules feature in your account.
Used for: converting a list to a normal text field with the list elements separated by a specific character (e.g. comma).
This rule is the opposite of the 'split text to list' rule. In this case, your field already contains a list and you want to convert this to a normal text field (with the elements separated by a certain character). In the example below we will convert a list of sizes to a text field with the sizes separated by "-".
This is what the size field looked like before the rule:
And this is what it looks like after saving the rule: