data modeling question

Hello,

Could I please have some suggestions on the data modeling? I am trying to build a data model for a report which customer only requires the most updated data to be shown. So the dataset will only include the most up-to-date data. With this requirement, is it ok if I do not include a date table in the model as I don't see there is any need to use time intelligence function on the report. 

The other question is I have a staff dimension table including staff info and a fact table having metrics and indicators related to staff. Staff Id is used as a key to link them. As indicators are also the most updated information, the relationship between staff and fact table is 1 to 1, instead of 1 to many. Is this doable or I need to somehow create a one to many relationship instead?

Any suggestion would be greatly appreciated.