contexts (Broegaard et al., 2019). Several of the other Nordic municipalities with high secondhome populations are aware of the potential of this group of (voluntary temporary) population and employ different strategies to engage and involve them (Slätmo et al., 2019), e.g., through meetings, targeted information and earmarking of funds to carry out physical improvements proposed by the voluntary temporary population. In other places, local authorities may be aware of the importance of the seasonal population and the considerable development potential they represent, but do not address them systematically (Topsø Larsen et al., 2018; Topsø Larsen, Broegaard, & Havtorn Larsen, 2019). The voluntary temporary population may be a somewhat 'invisible' population in receiving municipalities, as they are not easily captured in registry data and our ordinary perception of 'residents'. Gribskov municipality intends to develop and brand its tourism through 'strong narratives and place-bound experiences' (Gribskov turismestrategi, 2016-2020), which requires co-creation and collaboration with many actors-here, they also specifically mention authorities, leisure-time residents, networks, organisations and business organisations. One of the ways they approach this is through the organisation of workshops for leisure-time residents to 'strengthen the attachment to Gribskov municipality' (Gribskov turismestrategi, 2016-2020) as well as find ways to increase the use of second homes year-round (including through rental activity). Another workshop for leisure-time residents is planned to strengthen their involvement in cultural events and institutions and their development in the municipality. Thereby they also aim to extend the cultural networks available for such development activities, by involving and engaging leisuretime residents and their networks, not least in relation to local attractions. Gribskov tourism strategy highlights a concept of co-development responsibility in their collaboration with actor [forpligtende samarbejde], i.e., they are responsible for and engaged with the broad array of actors, with whom they collaborate for tourism development, from tourism organisations and public institutions to business associations, civic organisations, volunteer groups, residents and leisure-time residents (Gribskov turismestrategi, 2016-2020). In 'Invitation to co-create' (Gribskov kommune, 2017), a short version of a recent strategic plan, coordination and collaboration is seen as an important strategy by the municipality. It presents innovative ways of connecting the hinterland with its more immediately attractive coastline, to increase the attractiveness of the entire municipality and to 'improve living conditions' for 'residents and leisure-time residents, businesses and tourists' (Gribskov kommune; SLA København; Smith Innovation, 2016). This plan was part of a national strategic planning project to support local place-bound development in rural municipalities in Denmark (Erhvervsstyrelsen et al., 2017). Among the actions...