QGIS with callouts with offset from feature

I created callouts with expression below, because I need to have anchor dropdown at the half of a line.

make_line (
make_point (
"auxiliary_storage_labeling_positionx",
"auxiliary_storage_labeling_positiony"
),
line_interpolate_point(
$geometry,
length ($geometry)/2
)
)

However, I sometimes need to move labels a bit without showing a callout. If I use callout option, it is possible to achieve it with a setting of an offset from feature and label area (picture). How can I achieve it if I created callouts with an expression? As is seen on pictures 2 (label not manually moved) and pictures 3 ((label manually moved) I only moved label along the line.