How many lights should I use for indoor ID photo? Do I have to use flash?

One overhead light, two side lights and at least three lights, otherwise people's faces will have shadows when taking pictures, just like shadowless lights used in multi-point surgery. In addition, it is suggested that both men and women should apply a thin layer of powder on their faces when taking ID photos, not for the sake of beauty, but to eliminate a layer of oily light that is easily reflected on their faces when using the flash.