How to make "NeedHelpHere" fit each of the players: /roll 1d6 + @{NeedHelpHere|agi}

I am VERY new to macros - so much so, that I don't have the language to describe what I'm looking for, so I apologize for the rudimentary question.  I am the GM of a roll20 game.  I am experimenting with macros that might help my players.  I created one that adds a character's agility score to a 1d6 roll - assuming that character's name is NeedHelpHere.  /roll 1d6 + @{NeedHelpHere|agi}   Is there a way I can replace NeedHelpHere so that it would be whoever the "owner" of the macro might be?  I know there is a "selected" command, but we won't be using tokens.  Or will players have to manually edit the name in the macro before they start?

If you put this in the ability of a character, you can omit the name of the character. 

If you aren't using tokens, the method Aaron describes is the only*  way to achieve this. You'll have to manually create abilities on each character sheet. However, let me suggest using Tokens. You dont actually have to use the battlemap. You could just give each player a token, and use it only  for activating macros. Creating your macros as Token Actions means they'd all automatically be available on screen whenever the player selects their token. It's just very convenient to play this way, even if you dont use a battlemap. *That's not completely true. You could create a set of macros that explicitly includes every combination of character and attribute/skill, maybe one set per character. But this is a lot of work. Using tokens and selected means you only need to create one set of macros.

Fantastic.  Thanks to both of you.  I figured out how to use tokens in the way you described and it works great.

Great :)