lecture Event App before commit ticket

I’m walking through https://academy.mendix.com/link/path/42/Building-an-Event-App-Using-Microflows before commit ticket validation report error, missing day reference. by the way even in provided resources, which I like by the way, the place where to create a ticket is very well hidden. I’m unable to find it.    
1 answers

my solution:

adding button on day to create a ticket.

it works for me, hope this is the intended solution.

doing so would add a question about the concept to select days (1 to 3 enumeration) for a ticket.