So basically what the enzyme does is it catalyzes the transferring of the phosphate group from the ATP onto that Creatine molecule to create the high energy phosphor Creatine that can be used by the muscle cells as a high energy source. Now, once we form these two products, now these two products can be released from the active side, but because we're dealing with a random sequential reaction, unlike in this case, in this case it doesn't matter which one of these products is released first. We can either have the ADP come out first, followed by the phosphor Creatine, or we can have the phosphorus Creatine released first followed by that ADP. So either ATP or Creatine can insert the active site first. Once both of those reactants the substrates into the active site, only then can we actually transform the two reactants into the two products. And once we form the two products, the order at which the two products actually depart does not matter.