Finish the pop-up window (Wordpress Elementor)

On the spaceup.kz page, there is a calendar from the elementor plugin and when you click on the date with the event, a pop-up window opens.
By itself, the calendar and the window with the contact form are ready.

Have to:
So that when filling out the form, the date on which the user clicked the user came to the mail
Make it so that when adding an event, the administrator can also add the topic of the business breakfast / master class and the name of the speaker

Timeframe: 1-2 days