My ex-husband is supposed to pick up our child from my house at 6 p.m. on Friday to begin his weekend parenting time, but he is consistently 45 minutes to one hour late? What can I do about this?

You need to file a parenting time violation with the Friend of the Court (FOC) in your county.  In Kent County, there is no cost to file.  If the FOC determines there is enough evidence to investigate, they will do so and will make a recommendation to the court.  The FOC can recommend anything from loss of parenting time for the violating parent, to a temporary suspension of parenting time, to a permanent change to the parenting time schedule.