Some basic Forge questions? (Halo 3)?

[crazy calebino]

1. how do you save a modified game mode or forge a map, change the game mode, and save it, so you don't have to change the settings each time you play?
2. How do you make explosives keep falling and exploding in a certain spot?
other---------------------------------
In Guardian, how do you get on top of the platform above the center of the arena?(a link to a video would work fine)
Can you save game in co-op? how?

 

[Matt]

Can't remember #1 because I haven't done a forge in a long time. To make explosives keep falling you can stack a couple of boxes up, spawn explosives on them and remove the boxes afterwards. Also set the spawn time to what you want. There are 2 ways to get to the top platform and the easiest is to do a plasma grenade jump from the elbow near the sniper, right near the exploding barrel. If you want me to show you, add metholated.