Just to clarify, regarding Phase One where a general consent is secured for volunteers to join a “bank” of volunteers ready for some future possible trial. In that case the Ethics Committee approved consent form and recruitment procedure is adhered to and volunteers are not subjected to any trial specific screening whatsoever, but general screening for any future trial. This allows the investigator to do general screening and to gain permission from the volunteer to hold his/her data. The second consent process is trial specific and takes place before any trial protocol required assessments or screenings (including protocol required questionnaires, rating scales, etc) take place. The second consent would be an enrolment into the trial, whereas the first general consent was for enrolment into a general “bank” of volunteers. Others might have better information than me.

What you describe ("one for the Eligibility criteria + one for Clinical trial") sounds different, as it looks like both are related to the trial and hence enrolment (signing of consent) would be from the first consent, as the eligibility criteria are protocol required..