Before you start using the map editor, you must start the dataset, start the single-player game, wait for it to start and then exit, the description of the mod will appear in the menu on the flag instead of the original inscription, now you can work in the map editor

It is very important to make sure the "Independent Architecture and Units" DAT Mod has a lower Mod Priority than any architecture or unit mods.

Independent Architecture can be used in Standard Games by selecting the DAT mod in the Dataset List in the Top Right Corner. All Standard Game Modes (Random Maps, Special Maps & Scenarios) are supported.
Independent Architecture can be used in Online Multiplayer games by selecting the DAT Mod as the dataset when creating a lobby. Currently, Online games with IA (Or any Dataset Mod) will be Unranked.
IA CAN be used for Campaigns through an exploit. Instructions are listed in one of the Screenshots above.
IA CAN be used in the Map Editor the same exploit.

is this only for single player skirmish? when ever i try to use these in scenario editor they arent there whenever i try to use them in skirmish which is where i think that menu from the picture is in game whenever i select the option in game the game crashes it might be because im trying to load them all at once i guess i dont really know

If it is not clear at all, then look at the first screenshot from the link that I threw off, before the game you must enable ndependent Architecture and Units for 5.8 by Omkar https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2441571293

@calebbridges
If you decide to go through the company with them then you will not see the new models since the company ONLY works with the original data set

hi i was wondering how i can get these to work may i have some installation instructions? i have subscribed to all required mods on this list but the character models do not show up it is important to say i do have other mods installed as well is that a problem?