You need to check the Overclock box in the FIVR window to use turbo overclocking.
Your screenshot shows that you have lowered your turbo ratios, likely to control heat. You are underclocking your CPU so there is no need to check the Overclock feature.
When overclocking, your partially unlocked CPU allows you to increase the individual turbo ratios listed in the FIVR window by up to +4 bins of additional turbo boost. If you could ever find a way to keep your laptop cool, that would allow you to run a 45 multiplier when all 6 cores are active. (41 + 4)