With a free slot, or while you pay a Basic or Advanced subscription companies can be created in, the option to create another company appears on the screen where you choose one and, on the web, in the switcher beside the open company name too. In the mobile app, open the company name in the top bar, then open the full company chooser. If the create option is missing once the list has finished loading, it is usually because you have no free slot and pay no subscription the company can be created in. At most five of your subscriptions are checked, the first ones in your company list. On the web, if your slot or one of those subscriptions could not be checked, the option appears anyway and the dialog says so, with a button to check again.
If you create it in your subscription, the company gets that subscription’s plan, it does not spend your slot and nothing is charged separately. If you create it as an independent company, it spends your slot and starts on its own free trial.
How many companies your plan includes and how to add slots.
What you find inside the company once it is ready.