How to enable exec() in hestiacp

Thanks for the information bro, can you tell me how to edit the php.ini file in the HestiaCP or on my VPS with Ubuntu 20.04?

I am a novice but daring to use the hestiacp, I can follow the steps accurately but cannot do it on-my-own.

Please consider telling me step by step on how to do it and also, it may be helpful to many people on this platform like me.

Please help.