Homework / test English to Spanish Bus/Financial Law (general) Decision (UK, regarding m

The Applicants reserved their position as to whether it is permissible under the FSMA, and as a matter of due process , for the Authority TO ADVANCE A CASE on a Reference which was not part of the decision notice being referred. We heard no argument on the second issue although the issue was referred to in the skeleton arguments...

I need help with this expression, not sure if it could be: "instaurar una demanda?"

Thanks,