In most cases you can do it by replacing the existing dumb switch with a smart switch, but it depends on the exact type of lighting that you have in the office.
Some commercial lighting uses transformers and special switches which would require putting in a smart commercial lighting system, not something that could work with the Samsung SmartThings platform.
(Also, we should note that this forum is for people who are using the Samsung SmartThings ™ Home automation platform, so all questions and answers are assumed to be in that context. It’s not a general home automation forum. It is a very active forum, so it often comes up near the top in general google home automation searches, but it’s important to note that we are talking about the specific Samsung platform in these threads.)