To listen for form submission, you can write the following -
When user submits xyz form, do something.
Here, xyz will be the name of your form entity. If its a login form, you will write "when user submits login form, ...."
In place of "do something", you can write any other statement from the Supported sentences list.
Here are some common sentences -
Lets say you created a list of text cards that looks like below -
To listen for events on the click of the "view details" button, you will write -