Add provinces to trade company?

[Karsk]

Is this only possible now when they're being colonized? Bc IIRC you used to be able to do it right next to the create client state button but now I see no option for actually adding to trade companies other than when the province is being colonized. If thats the only way thats pretty lame

[Xray]

Is the province in a trade company region?

[billy]

no , you can add them afterwards , its best to add them afterwards as theres a big penalty to relgious conversion in a trade company , i convert them then add them,

you can add and remove them at will.

if you click on the rade zone it tells you if a trade company can be formed there

i suspect you are not in a trade company region . Some refions are trade company , some colonial , some neither

once you get 50% trade in a trade company zone you get a new merchant , thats what you want

[tinisiyo]

Also if you remove province from a trade company you cant add it back for a few years, 5 or something.

[Victrixy]

I would suggest you to add provinces to trade company as soon as you colonize a province.
Because the institutions that you've embraced will begin to tick up the moment you colonize it, and by adding it to a trade company will halt all embraced institution spread.

Noted, institutions can still be spread from adjacent provinces or specific requirement is meant, e.g. colonialism from owning colonial nations, printing press if the provinces are protestant or reformed, etc.