Most SSD manufacturers don't allow you to change this as far as I know, and not all SSDs have static overprovisioning. However, most modern SSDs use a combination of static and dynamic overprovisioning, and it all happens automatically depending on how much space has been used. You roughly calculate the amount of statically provisioned space by subtracting the advertised capacity from the nearest power of 2, for example a 500GB drive likely has 512GB worth of NAND, but 12GB is statically provisioned.
The dynamically provisioned space is roughly a third of the remaining capacity on TLC drives, and a quarter on QLC drives.