In a future release, this will optionally be done automatically, keeping your settlements equipped as they grow.
Note that this flag is new, so if you're updating from a version prior to 2.1, and have already distributed weapons and armor, you'll need to use the "Flag Settlers as Equipped" option at an Armory Telestorage Manager to set the flags for your equipped settlers.
Distributing weapons to settlers will cause them to revert to their original outfits.
Distribute weapons first, then distribute armor (luckily distributing armor doesn't interfere with their currently equipped weapon.)*Note: Correct armor distribution requires that armors components be placed into the appropriate sub-containers.
Prior to version 3.0, you also needed to construct armory containers in any settlements that you wanted to distribute gear to, but now you can distribute to all settlements simultaneously.
To avoid issues related to settler default outfits, this mod operates on generic unnamed settlers only, switching their outfits to leveled list inventory entries, forcing them to be equipped via a spell that sorts through their inventory re-equipping armor when necessary.
This means that you can redistribute periodically to get gear to any new settlers that have shown up since the last time you distributed, without having to redo your whole distribution.
The flags are cleared when you retrieve armor and/or weapons from your settlers.
As far as I can tell, the code is still fine, but the changes this mod makes to settlers to make them more amenable to having their outfits replaced aren't carrying over.
New weapons are selected from "Equipment" and distributed among the settlers.
Once an Armory Telestorage Manager is created, all armory containers will share storage, making all items accessible from any settlement.
In addition to two styles of basic armory container (metal box and vault locker), it also lets you craft an Armory Telestorage Manager that connects all of your settlement armory containers via teleportation, letting you distribute weapons to all connected settlements at once.
This happens more quickly than I would have imagined (right now I've got it distributing to 118 settlers in about a minute).