You have the following tables.

There is a many-to-one relationship from Subscriber to Date that uses Subscriber[StartDate] and Date
[Date]. The Cross filter direction of the relationship is set to Single.
You plan to create a column chart that displays the following two measures:
Count of SubscriberID by Month based on the StartDate

Count of SubscriberID by Month based on the EndDate

What should you do before you create the measures?