Move data from multiple members in a dimension to another single member in the same dimension by acc

Summary

Move data from multiple members in a dimension to another single member in the same dimension by accumulating the data

Content

I'm new to Essbase. I need to write a calc script to move data from multiple members in a dimension to another single member in the same dimension by accumulating the data. Is this possible?

For example - I have 10 members in one part of the hierarchy (1 parent roll up) and another 10 members in another part of the hierarchy (different parent roll up). I want to move data of 10 members of the 1st hierarchy to a "default" member in the 2nd hierarchy - by accumulating data of the 10 members into the default member and it's value. Pls. help.