Let Me Choose !
Then, this mod is made for you ! It remove every job restrictions and limitations, nothing more, nothing less !
You want to use it in singleplayer : Well now you totally 101% can ! What it does in singleplayer is to make one character of each class to spawn at the campaign start. Allowing you to choose which one of them you want to main.
Small note : this mod is compatible with any mod that doesn’t overwrite the "Jobs.xml" file. More specifically : all mods that doesn’t override any vanilla PLAYER jobs.
If however tou want a mod that just remove the forced captain role try this one out : https://steamcommunity.com/sharedfiles/filedetails/?id=2421033209