Answer:
broadcast
Step-by-step explanation
this sounds like you are using scratch or a similar drag and drop block-based coding system so I'll just go off of that. The broadcast block is used to send out a command to other blocks. for example you could be coding a dancing animation and program a character to send out the "dance" command to all other sprites that dance. Of course, you will need the "When I receive" event block and then program a sequence of events connected to that event block so that when the sprite receives the "dance" broadcast it will execute the sequence for when it receives that broadcast. Hope this helps feel free to ask any other questions in the comments section as i will gladly answer them to the best of my abilities.