To close your short option position, place an order in the BBAE app to buy the option with the same terms as the one you sold. Keep in mind that the option's premium may have changed, and you may need to pay more or less than what you received when you initially sold the option.
In summary, understanding the assignment process and the ability to buy options back in the open market is essential for managing your options positions. Monitoring your account regularly and taking appropriate action when needed can help you reduce risk and lock in profits.