All admin commands require a player's name and I don't want some of them to?

Okay, I am making an admin script, but on commands, such as rejoin and reset it requires a players name, and I don't want them commands to have that. Only kick and kill should have it. i.e. ;kick mosski123

Here is my code;

local Admins = {
	["19498972"] = true, 
	["1540993"] = true, 
	["46641586"] = true
}

local prefix = ';' 

local commandTable = {}


function findPlayer(name)
    for _, player in ipairs(game.Players:GetPlayers()) do
        if player.Name:lower() == name:lower() then
            return player
        end
    end
end

function commandTable.reset(message, player)
    player.Character:BreakJoints()
end

function commandTable.rejoin(message, player)
	game:GetService("TeleportService"):Teleport(game.PlaceId, player)
		if player.Character ~= nil then
		player.Character:remove()
	end
end

function commandTable.kill(message, player)
	victim = findPlayer(message)
        if victim and victim.Character then
            victim.Character:BreakJoints()
       end
end

function commandTable.kick(message, player)
	victim = findPlayer(message)
		if victim and victim.Character then
			victim:Kick("[KICK]: "..player.Name.." has kicked you from the server.")
	end
end

game.Players.PlayerAdded:connect(function(player)
	if Admins[tostring(player.UserId)] then
		player.Chatted:Connect(function(message)
			local command, argument = message:match(prefix.."(.+) (.+)")
			if command and commandTable[command] then
				commandTable[command](argument, player)
			end
		end)
	end
end)