Cabin Lay out LET doesnt allow flight attendants

Hello,

I want to make a  cabin config for my LET aircraft (I have about 7 of them). However even if I do not put the maximum possible number of seats, it does not allow me to add any flight attendants. And the minimum number of flight attendants is 0. I don't want the thigns flying without any flight attendants on them , obviously.

How do I get flight attendants on my let?

Not possible

Cabins with less than 19 seats never have any flight attendants. Means the passengers have to take a lunch box and newspapers at time of boarding.

Okay thank you !

There is just no jumpseat in a LET410 and as they are 19 seats a flight attendant is not required.