Table 1.

Co-design workshop format.

Co Design Workshop	Content/Activity
One	Identification and discussion of key terms creates common language, assesses mental health literacy, improves understanding of the topic and aims to identify and define the problem.
	Familiarisation with e-mental health tools generates discussion about design and use of these tools and aims to position and frame the problem and potential solution from the perspective of youth participants.
Two	Vignettes of people with mental health concerns prompts discussion about risk factors, protective factors, help-seeking and beliefs about treatments.
	Photovoice and video methods invite participants to take photographs/videos of salient issues affecting them and their community (Hergenrather et al., 2009).
Three	Body mapping aims to determine experiences of mental health and wellbeing, map symptoms and identify risk and protective factors.
	Group discussion of photovoice images and videos from previous week, prompts reflection, shares knowledge and creates critical dialogue (Hergenrather et al., 2009), further defining and positioning the problem.
	Familiarisation with e-mental health resources allows participants to identify aspects which enhance or inhibit use, and aims to capture the meaning and common features of an experience
Four	Review and group discussion of e-mental health resources introduced in co-design workshops one and three creates further dialogue about design features which informs the draft of the new resource
	Online survey collaboratively designed with co-design workshop participants and introduction to peer researcher phase aims to build capacity and involvement of youth in the research process.
	Co-Analysis of Body Mapping and/or survey data with participants to highlight similarities and differences
Five	Member-checking of emerging themes allows the identification of commonalities and differences and re-visits topics to deepen understanding.
	Review and group discussion of first draft of the AIMhi-Y App. Draft presented as a paper-based wireframe with available graphics super imposed. Discussion on content, graphics, usability, and appeal.
Six	Further Member Checking of suggested additions to the drafted app. Further development of specific activities or suggested content.
	Further review and group discussion of first draft of the AIMhi-Y App.