Introduction: One of the main current challenges for the Belgian primary health care system is the integration of primary mental health care. Belgium is known to have a shortage of mental health professionals. Public mental health services are understaffed, resulting in long waiting lists. Private mental health professionals are too expensive for many people in psychological distress. Since 2019, a limited number of primary mental health consultations is reimbursed, to lower the financial threshold to access the private mental health sector. Since 2021, the primary mental health convention changed, towards higher renumeration for psychologists working in the convention, and starting more from a public mental health vision. This is a Belgian federal action. In Pallieterland and four other primary care zones, this action is coordinated by two mental health networks: Emergo (for adults) and PANNG 0-18 (for minors). In this article the focus is on the change management on the meso-level: how did and still does primary care zone Pallieterland help to implement this policy change? What we did: The first step was to have a representative of the mental health sector in the board of the primary care zone, a necessary navigator and go-between, facilitating communication efforts of the primary care zone towards the mental health sector. The second step was to help founding a local psychologists’ association. After some previous attempts, the start of the new convention showed to be a good momentum for the start of the local psychologists’ association. Their founders are good communicators, representing the local primary mental health professionals in the boards of both the primary care zone, and of the local implementation group of the new primary mental health care convention. The third step is to keep monitoring the implementation progress, making sure that all localities in the primary care zone are well served with reimbursed primary health care consultations. The primary care zone facilitated and still facilitates ...