First step: Justify your research plan previously. Why is it relevant to integrate qualitative and quantitative methods for answering your research objectives? Then, select a research design and appropriate methods to gather information.
Second Step: organize your qualitative sources of information with relevant variables. Afterward, identify interviews with the associated date and place, sociodemographic information of interviewees. Identify to which part of the study corresponds the information gathered, exploratory, triangulation, or confirmatory.