R>How do i start this npc?

[topechi]

// -----------------------------//
// ------- Free For All --------//
// -------- By : Butch ---------//
// A simple Free for all script //
// -----------------------------//

guild_vs5,48,51,6	script	FFA Master	999,{
if(getmapusers("guild_vs5") != 1) 
	{
		mes "[^FF0000FFA Master^000000]";
		mes "Current players - ^FF0000"+ getmapusers("guild_vs5") +"^000000.";
		close;
	}
	else if(getmapusers("guild_vs5") == 1)
	{
		
		dispbottom "You are a winner of Event Free for all. Congratz!";
		donpcevent "Free For All::OnStopEvent";
		announce "Free for all winner : "+ strcharinfo(0) +"", bc_all, "0xFFCE00";
		getitem 25002,1; // Reward
		warp "prontera", 156,149;
		end;
	}
}

// ------ FFA Warper -------//
		
prontera,147,149,6	script	Free For All	999,{

	if (.start != 1) {
	mes "[^FF0000Agent Mil^000000]";
	mes "Free for all is not available at the moment";
	close;
	}
		mes "[^FF0000Agent Mil^000000]";
		mes "What do you want?";
		switch(select("Free for all")) {
			case 1:
				if( getcharid(1) ) { mes "Please leave your party."; close; }
				if( getcharid(2) ) { mes "Please leave your guild."; close; }
					else switch(rand(3)) {
						case 0: .@x = 18; .@y = 50; break;
						case 1: .@x = 50; .@y = 77; break;
						case 2: .@x = 81; .@y = 49; break;
						case 3: .@x = 49; .@y = 22; break; 
					}
					warp "guild_vs5", .@x,.@y;
				break;				
		}
	close;
	
OnStartEvent:	
OnClock1245:
OnClock1645:
OnClock2045:
OnClock0045:
OnClock0445:
OnClock0845:
	.start = 1;
	disablenpc "FFA Master";
	announce "Free for all will start in 5 minutes.", bc_all, "0x00b89d";
	sleep 120000;
	announce "Free for all will start in 3 minutes.", bc_all, "0x00b89d";
	sleep 120000;
	announce "Free for all will start in 1 minute.", bc_all, "0x00b89d";
	sleep 60000;
	announce "Free for all has started!", bc_all, "0x00b89d";
	.start = 2;
	enablenpc "FFA Master";
	sleep 2000;
	if ( !getmapusers("guild_vs5") ) goto OnStopEvent;
	mapannounce "guild_vs5", "FFA starts in 5", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 4", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 3", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 2", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 1", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "GO! Kill all!", bc_map;
	setmapflag "guild_vs5", mf_gvg;
	removemapflag "guild_vs5", mf_noskill;
	end;
	
OnStopEvent:
	.start = 0;
	disablenpc "FFA Master";
	removemapflag "guild_vs5", mf_gvg;
	setmapflag "guild_vs5", mf_noskill;
	end;
		
OnInit:
	waitingroom "[Free For All]",0;
	end;
}

guild_vs5	mapflag	partylock
guild_vs5	mapflag	guildlock
guild_vs5	mapflag	notrade
guild_vs5	mapflag	nodrop

Hi! Just wondering how can i start the npc and make it usable anytime? and also how to remove the clock? thanks in advance!

[Emistry]

// -----------------------------//
// ------- Free For All --------//
// -------- By : Butch ---------//
// A simple Free for all script //
// -----------------------------//

guild_vs5,48,51,6	script	FFA Master	999,{
if(getmapusers("guild_vs5") != 1) 
	{
		mes "[^FF0000FFA Master^000000]";
		mes "Current players - ^FF0000"+ getmapusers("guild_vs5") +"^000000.";
		close;
	}
	else if(getmapusers("guild_vs5") == 1)
	{
		
		dispbottom "You are a winner of Event Free for all. Congratz!";
		donpcevent "Free For All::OnStopEvent";
		announce "Free for all winner : "+ strcharinfo(0) +"", bc_all, "0xFFCE00";
		getitem 25002,1; // Reward
		warp "prontera", 156,149;
		end;
	}
}

// ------ FFA Warper -------//
		
prontera,147,149,6	script	Free For All	999,{

	mes "[^FF0000Agent Mil^000000]";
	mes "What do you want?";
	switch(select("Free for all")) {
		case 1:
			if( getcharid(1) ) { mes "Please leave your party."; close; }
			if( getcharid(2) ) { mes "Please leave your guild."; close; }
				else switch(rand(3)) {
					case 0: .@x = 18; .@y = 50; break;
					case 1: .@x = 50; .@y = 77; break;
					case 2: .@x = 81; .@y = 49; break;
					case 3: .@x = 49; .@y = 22; break; 
				}
				warp "guild_vs5", .@x,.@y;
			break;				
	}
	close;
	
OnInit:
	waitingroom "[Free For All]",0;
	.start = 1;
	disablenpc "FFA Master";
	announce "Free for all will start in 5 minutes.", bc_all, "0x00b89d";
	sleep 120000;
	announce "Free for all will start in 3 minutes.", bc_all, "0x00b89d";
	sleep 120000;
	announce "Free for all will start in 1 minute.", bc_all, "0x00b89d";
	sleep 60000;
	announce "Free for all has started!", bc_all, "0x00b89d";
	.start = 2;
	enablenpc "FFA Master";
	sleep 2000;
	mapannounce "guild_vs5", "FFA starts in 5", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 4", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 3", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 2", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "FFA starts in 1", bc_map;
	sleep 1000;
	mapannounce "guild_vs5", "GO! Kill all!", bc_map;
	setmapflag "guild_vs5", mf_gvg;
	removemapflag "guild_vs5", mf_noskill;
	end;
}

guild_vs5	mapflag	partylock
guild_vs5	mapflag	guildlock
guild_vs5	mapflag	notrade
guild_vs5	mapflag	nodrop