In my experience of qualitative research in WEFT software, Atlas ti.6 - first I import all the relevant literature reviews in softwares. secondly, I add the study variables or parameters as codes. Thirdly, I take the articles one by one and select the code according to the study variable. For an instance, study variables - farmer attitude on sustainable farm practices; farmer constraints on adaptatio; farmers willingness to adaptation like it goes. Any evidences related to these variables are get coded. This is the basic procedure I do.