It's automatic, it does it automatically.
Not in the last mish I created. We had members around the mid 30's, some in the upper 20's, and some in the teens. They were all their normal levels in the mish.
Hence, why I asked the question.
Victory
Schattenbolt - Blaster Elec/Elec/Elec
Pierce Steele - Blaster Arch/MM/Munitions
Paragons of Victory
If all custom enemies, the level range is 1-54. So no SKing. You need to add a few normal enemies to reduce the level range, which with cause auto-SKing.
ok if you want it to auto sk you need to have a non custom toon in htere somewhere like the typical meow is 42 because the mobs are 42 I think all custom toons are 1-50 not sure but you must have the desired level toons in your arc somewhere 
hope that helps
Nitra
It's better to save the Mystery, than surrender to the secret...
You can make your custom mobs only spawn in a certain level range, in other words.
my lil RWZ Challenge vid
If characters are below the minimum level of the enemy's range, they will be sk'd up to the minimum.
If characters are above the maximum level of the enemy's range, they will be exemped down.
Custom enemies have a range of 1-54, so no one will be sk'd or exemped automatically. Instead, the enemies will spawn at the appropriate level for the mission owner. When the team members are all different levels, then the team needs to manage sk'ing and exemping on their own, just like with a regular mission.
Avatar: "Cheeky Jack O Lantern" by dimarie
gotcha. Thanks a ton, everyone.
Victory
Schattenbolt - Blaster Elec/Elec/Elec
Pierce Steele - Blaster Arch/MM/Munitions
Paragons of Victory
So with the group you mentioned above, take a standard critter that only exists at mid-30s or higher, add it in somewhere as a non-required boss, captive, or ally, and voila, the minimum range of the mission will be that critter's range and everyone will be SKd up.
Eva Destruction AR/Fire/Munitions Blaster
Darkfire Avenger DM/SD/Body Scrapper
Arc ID#161629 Freaks, Geeks, and Men in Black
Arc ID#431270 Until the End of the World
Ok, I give up on trying to find a button, and couldn't turn anything helpful up in Search.
So how do I make my mission auto-sk? I'm making an arc for my SG, so all levels can run it. Can anyone help me out?
It's all custom critters, though, if that makes any difference.
Victory
Schattenbolt - Blaster Elec/Elec/Elec
Pierce Steele - Blaster Arch/MM/Munitions
Paragons of Victory