How can I add line breaks to the Calculation Values field

I am trying to build a form with a series of Yes/No questions that should result in a list of events (timeline). So as the user answers 'Yes' to a question, I want to populate multiple events into a list on the Thank You page. This task would be easier if it was one-to-one: "If question 1 equals yes, then show one event". But, I need it to work one-to-many: "If question 1 equals Yes, then show three events".

In the "Calculation Value" field I could put 'Event 1, Event 2, Event 3' for 'Yes', but on the thank you page it keeps it all on one line. I want them in a list so each event should be on its own line. I tried 'Event 1<br>Event 2<br>Event 3' but that didnt work. Any help here? Is there another way to do this kind of logic?

You can not use a space characters as "Calculation Value". 

Instead of adding calculation values, you can use Update/Calculate conditional logic to update your other field if Yes option is selected. You should  also use Text field instead of Form Calculation widget for reception-events field. 

You can set your conditions like this. 

Conditional Logic Inserts Text/Calculation Into A Field

Smart Forms Using Conditional Logic

Here is my demo form: https://form.jotformpro.com/71725774980973 

Feel free to test it an clone it. 

I noticed that your form is created on guest account. Please note that guest accounts are limited to 10 submissions. Your guest account is already overlimit. I would suggest you to register and create Free account. You can use this link to signup: https://www.jotform.com/signup/ 

Use same email address that you used to post your question here on forum and your form will be moved to your free account.

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Hope this will help. Let us know if you need further assistance.