Slur endpoint position relative to other items
In order to avoid collisions, the default positions of slur endpoints vary depending on whether slurs are placed on the notehead side or stem side of notes, their position relative to staff lines, and whether articulations, ties, and other slurs exist at the same rhythmic position.
Slur endpoints relative to noteheads and stems
The default position of slur endpoints relative to noteheads is 1/2 space above a notehead in a space on the staff, and 1/4 space above a notehead on a line on the staff.
You can change the vertical and horizontal offsets for the endpoints of slurs in the Endpoint Positioning section of the Slurs page in Engraving Options. However, you might also need to reduce the value for Minimum gap inside slur curvature to avoid collisions in the Avoiding Collisions section, as endpoints cannot be closer to noteheads than this value.
This value affects all slur collisions in your project.
Slur endpoints relative to articulations
By default, articulations of force and stress are placed outside slur endpoints, and articulations of duration are placed inside slur endpoints, which automatically raises the endpoints.
You can position slur endpoints closer to articulations by reducing the value for Minimum gap inside slur curvature to avoid collisions in the Avoiding Collisions section of the Slurs page in Engraving Options.
Changing this value affects the position of slur endpoints project-wide. You may find it more appropriate to move slur endpoints relative to articulations individually in Engrave mode.
Slur endpoints relative to ties and other slurs
The default position of slur endpoints is 1/4 space above an existing slur that starts/ends on the same note.
You can change this by increasing/decreasing the value for Minimum vertical gap between two slurs starting or ending on the same note in the Avoiding Collisions section of the Slurs page in Engraving Options.
To make slurs appear closer to tied notes, you can adjust the values for slur endpoint position relative to noteheads.