Here are some examples of how the part dimensions are positioned in general arrangement drawings with different positioning settings selected on the Parts tab.

In the example below, Positioning is set to Inside grid, which places all dimensions next to or near the grid.

In the example below, Positioning is set to Outside grid, which places all dimensions outside the grid.

In the example below, Horizontal position is set to Left side, which places all dimensions to horizontal parts to the left of the grid.

In the example below, Horizontal position is set to Right side, which places all dimensions to horizontal parts to the right of the grid.

In the example below, Horizontal position is set to Distributed to both sides, which places all dimensions to horizontal parts to the side of the grid nearest the part they are dimensioning.

In the example below, Vertical position is set to Above, which places all dimensions to vertical parts above the grid.

In the example below, Vertical position is set to Below, which places all dimensions to vertical parts under the grid.

In the example below, Vertical position is set to Distributed to both sides, which places all dimensions to vertical parts to the side of the grid nearest the part they are dimensioning.