A fitting system for a component, in particular for a window or a door, wherein the component has a frame and a leaf which is movable with respect to the frame and the fitting system is configured to adjust the leaf between at least two different functional states, wherein the fitting system has a set of modular functional units, comprising: at least two bearing units (21a, 21b) which, in the assembled state, are configured for rotatably supporting the leaf at the frame, wherein the bearing units (21a, 21b) each comprise a first bearing part configured for fastening to the frame and a second bearing part configured for fastening to the leaf, and wherein, in the assembled state, in each case the second bearing part is displaceable relative to the first bearing part transversely to the frame plane by means of a drive, at least one closure unit which, in the assembled state, is configured for releasably fixing the leaf to the frame, wherein the closure unit has a closure element which can be moved between a fixing position and a release position by means of a drive, and at least one opener/closer unit (25, 85) which, in the assembled state, is configured for automatically opening and closing the leaf at least during an automatic phase, wherein the opener/closer unit (25, 85) has an adjustment element (67, 87) which is provided for engaging at the leaf and which can be moved by means of a drive between a retracted position and an extended position, characterized in that the adjustment element of the opener/closer unit comprises a pin receiver for a locking pin arranged at the leaf. wherein the fitting system has a set of modular functional units, comprising: at least two bearing units (21a, 21b) which, in the assembled state, are configured for rotatably supporting the leaf at the frame, wherein the bearing units (21a, 21b) each comprise a first bearing part configured for fastening to the frame and a second bearing part configured for fastening to the leaf, and wherein, in the assembled state, in each case the second bearing part is displaceable relative to the first bearing part transversely to the frame plane by means of a drive, at least one closure unit which, in the assembled state, is configured for releasably fixing the leaf to the frame, wherein the closure unit has a closure element which can be moved between a fixing position and a release position by means of a drive, and at least one opener/closer unit (25, 85) which, in the assembled state, is configured for automatically opening and closing the leaf at least during an automatic phase, wherein the opener/closer unit (25, 85) has an adjustment element (67, 87) which is provided for engaging at the leaf and which can be moved by means of a drive between a retracted position and an extended position, at least two bearing units (21a, 21b) which, in the assembled state, are configured for rotatably supporting the leaf at the frame, wherein the bearing units (21a, 21b) each comprise a first bearing part configured for fastening to the frame and a second bearing part configured for fastening to the leaf, and wherein, in the assembled state, in each case the second bearing part is displaceable relative to the first bearing part transversely to the frame plane by means of a drive, at least one closure unit which, in the assembled state, is configured for releasably fixing the leaf to the frame, wherein the closure unit has a closure element which can be moved between a fixing position and a release position by means of a drive, and at least one opener/closer unit (25, 85) which, in the assembled state, is configured for automatically opening and closing the leaf at least during an automatic phase, wherein the opener/closer unit (25, 85) has an adjustment element (67, 87) which is provided for engaging at the leaf and which can be moved by means of a drive between a retracted position and an extended position, characterized in that the adjustment element of the opener/closer unit comprises a pin receiver for a locking pin arranged at the leaf.