These are the three possibilities to configure booleans and when to use it:
Boolean data field + default value = true/false + mandatory field:
-> Only 2 states are offered in the client.
-> This is how you get a yes/no field where you prefer a value for users in advance
Boolean data field +default value = null + mandatory field:
-> In the client, zero is offered first, then it goes through 2 states
-> You use this setting when you want to force a decision from the user,
-> but no value offered/preferred in advance
(this means that the user has to actively decide - it is not enough to simply click on forward)
Boolean data field + any default value:
o Three states are offered in the client
o Usable in cases where users need a choice between yes/no/don't know
