Can I withdraw money from my shares account?

Excuse me, I was wondering if I have the option to withdraw funds from my shares account? I understand that shares are a type of investment and typically involve a longer-term commitment, but I'm curious if there's a way to access my money in case of an emergency or for other personal reasons. Is there a process in place for doing so, and if so, what are the steps I need to take? I'd appreciate any information you can provide on this matter.