Open the workspace and go to the attribution area
Select the dataset or model where dynamic members will be used
Open the member or dimension management screen
Choose the option to create a new custom member
Set the member type to dynamic or calculated
Define the attribution logic or formula
Specify the source fields, conditions, or filters
Set any required time, segment, or entity rules
Save the custom attribution member
Validate the member output against sample data
Publish or activate the member for use in reports or models
Test the member in attribution analysis views
Update the member logic as needed when data or rules change