Is it possible to attend the doctorate’s curricular phase in a working student regime?

Given that the curricular phase is organized so that it may focus on 2 or 3 blocks (morning or afternoon) in one or two days per week, and since the organization where you belong to allows it, it will be possible to attend it in a working student regime. However, be alerted for the possibility of existing intensive regime courses during 1 or 2 weeks.