TikTok has yet to set an office return date but says that when they return to the office workers will have the option to work remotely for up to two days a week. They will also be able to request remote work from a domestic location. This policy will be for full-time associates and interns. TikTok will allow employees in all their operating countries to have this flexible option.
See "TikTok announces their return-to-work hybrid model", Echo Wang, Reuters, July 12, 2021