You will not be able to earn more coins .
But you will be able to hit POS blocks more often. (more frequent reward based on your coin age)
Where to enable '' coin control features '' in wallet:
In wallet click at ''Settings'' and then at ''Options''. Once in options menu click at ''Display'' tab.
To use Coin control feature click on ''Send coins'' (tab) and after it on inputs.
In case of BSX best option is minimal 1000 coins as one input to reach more POS blocks.
You can check at BSX block explorer ''extraction'' section.
https://chainz.cryptoid.info/bsx/#!extraction
Use Coin control very carefully. If you have no experience with this feature.
I advice you to check few youtube videos about coin control.