Contents from Help Policy_Chance
If you choose the 'Chance to be a channeler' option in creation you have a chance of becoming a channeler equal to the percent of the population with the ability. This is a rather small chance but it is the only way channeling characters will be allowed to enter combat oriented sections of guilds such as a house guard or enter 'typically non-channeler guilds' such as the warders, children of the light, or any other combat oriented organization.
This is unfortunately, a rather large OOC constraint, but we feel it is necessary to maintain the realism of the world. In addition to this, guilds may not discriminate based on channeling ability. This meaning if there is a non-combat oriented guild, they may not accept only channelers, or only non-channelers because that is solely their preference.