If you want to use the existing family-wide parameters “OmniClass Number” and “OmniClass Title” then select the “Built-In Family Parameters” radio button.
But if you want to use your own shared parameters so that each family type can have its own OmniClass values, then select the other radio button, select your shared parameter file, the family type, and the text parameters from that shared parameter file that should receive the OmniClass data.
When you push the OK button, the two shared parameters would be created as Type parameters in the family (if they don’t already exist). The OmniCode data selected in the grid control would be set for those 2 parameters.
Is this what would be useful?