Guide placement and the number of guides will affect the action of the rod.
X2
There is a chart that works awesome. They are pricy, so it really only pays to spend the money if your building a lot. Basically, you bend the blank to “load it” against the chart, and all the guide placements are there to mark,
Otherwise, I just tape the guides in place, with a reel on it, Pass the line through and load the blank with enough weight to bend the rod. Then I start moving the guides as needed to get the right action