When we are creating Blueprint scripts, sometimes, a group of Actions is used in more than one place in Blueprint. These Actions can be converted into Macros or Functions, simplifying the initial script because this group of Actions will be replaced by only one node. Also, if you need to change something in this group of Actions, this change will only be implemented in the Macro or Function rather than having to search every location where this group of Actions was used. This is a good programming practice to use as it simplifies code and debugging.