Live interpretation in Portuguese-English for 5-8 30 minute calls (3-8 hours in total)

We are doing research with 8 Portuguese participants in Portugal. The study is on vacuum cleaners where participants describe their use with their vacuum cleaners for 3 weeks. We have sent written materials to them and would like to introduce the study to them in a 30-minute video call. We have a written script to approximately follow, but we will also answer any questions the participants might have. We need assistance so that participants can speak in Portuguese and we can conduct the sessions in English, with the help of a live translation.
The attached script overviews what we go through in the calls. The attached document is what is sent to the participants that we are introducing in these calls.