Dynamic variables are values that change depending on the meeting, client, or other conditions. For example, if a host named "Oliver Smith" wants to name an event in his calendar to include both his name and the client's name, he can use dynamic variables to achieve this. From the dynamic variables, he can select host_name and client_name. As a result, the meeting name could be set as {{host_name}} and {{client_name}}.
Let's take another example. Dynamic variable `{{form_responses}}` contains all the answers to the questions. This can be used to show all questions and the answers posted by the person who booked the meeting.