SAP Analytics Cloud

1. When we build stories based on a model(live connection to S/4 CDS view), for some of them will prompt up the parameter input screen but some of them not. Is there any way to force the parameter input screen prompt up?

2. On the parameter selection screen, for some of parameter, we have the small square icon which allow us to select from a list(LOV like); but some of parameter don't have any input help. Is there any way we can add the input help for all parameter?

Thanks,

Yufei