Use this procedure to change the spacing between nodes on a layout curve with fixed repeated spacing.
Layout curve with evenly spaced node grips
Changing the node spacing of a layout curve using grips
The Spacing grip is attached to the first node of the layout curve.
If you move the grip to the left to decrease the space between nodes, the number of nodes increases. If you move the grip to the right to increase the space between nodes, the number of nodes decreases.