Update: I seem to figure it out myself, thanks to those who tried to help :)
I am just wondering if I want to communicate from a LocalPlayer to the Server and to a RecipientPlayer, how can I do it? I'm not asking for a script or anything, just needed someone to give me a guide and tell me how it can be done.
If you are confused about what I'm talking about, I'll give you an example. So for example, when a LocalPlayer enters a Recipient Player's name and presses a "submit" button on a Gui to change something, I only want the RecipientPlayer to see the change. Let's say the change is something in the Workspace, how can I do this? (The reason why I use Workspace as an example is things located in locations like PlayerGui and stuff can be changed easily using RemoteEvents, but for Workspace, it will be harder)
Here's what I think I can do using Remote Events/Functions (maybe?), but I just don't know how... LocalPlayer's Client Server --> Server --> RecipientPlayer's Client Server