Can I change my visa from Category O (Dependent) to Category B (Work Visa) while in Thailand?

The user is currently on a Category O (dependent) visa and has been offered a job at a school. They are inquiring whether they can change their visa to Category B (work visa) while still in Thailand or if they need to return to India for the change. The responses indicate differing opinions, with one confirming that a change can happen within Thailand, while another suggests that employment on a dependent visa is not permitted and a trip home may be required.