Hi Love,
After carefully arranging your clothes, the liquid or powder detergent is added before beginning a cycle on this top-load washing machine model.
For additional details about starting a cycle with the washer, please refer to page 36 of the manual link below.
User manual.
https://downloadcenter.samsung.com/content/UM/202306/20230630150436152/DC68-03850D-06_IB_WA3200T_EN_CFR_MES_R_230628.pdf
-Kimberly