Table 3. Categories and subcategories of active ingredients in the ‘people’ category.

CATEGORIES	SUBCATEGORIES
Social composition Relating to how people interact through engagement with the activity and who is involved in this interacting
Social diversity The people involved in the activity	Presence of others
	Shared attributes
	Distinct attributes
	Personal attributes
Participant experience	Activity experience
	Health experience
	Lived experience
	Relationship to others
Integrated social exchanges Social exchanges (face to face or digital) between participants that are part of or integrated into the activity	Shared focus
	Shared activity
	Social exchanges
	Structured social time during activity
	Structured social time outside activity
	Communications
Informal social exchanges Social exchanges (face to face or digital) between participants that are not planned as part of the activity	Unstructured social time during activity
	Unstructured social time outside activity
Activity facilitation Relating to the people who lead or guide the outward facing aspects of the activity (i.e. not the administrative aspects but the activity facilitation)
Type Relating to the kind of leadership employed to deliver the activity	Facilitator(s)
	Co-production
	Number
	Professionalisation
	Training
	Consistency
Facilitator experience Approaches and/or experiences that a facilitator may bring to an activity	Activity experience
	Health experience
	Lived experiences
	Relationship to others
Practice and style The manner in which the activity is delivered	Technique
	Personal attributes
	Values-directed focus
	Outcomes-directed focus
	Person-centred focus
	Autonomy-directed
	Equality, diversity and inclusion
	Safety
	Tailoring
Additional people Staff or other people that support or co-lead the activity	Presence of volunteers
	Presence of healthcare professionals
	Presence of others