Hi rendlut,
Welcome to the eazyBI community!
I suggest creating an additional issue hierarchy with Initiative as a level. Then, you will be able to aggregate any measure to that level.
You can find instructions for creating additional hierarchy here: Additional Issue hierarchies and also some community tips and tricks: How to create an additional issue hierarchy
Also take a look at this community post that provides example with Initiatives: Issue creating an additional issue hierarchy
I hope this helps and in case you get stuck, please write your specific requirements to support@eazybi.com.
Kindly,
Ilze