Can I set up that students can unlock mute by themselves when they want to talk?

Hello, I am a newbie here.
During my webinar lessons, I want to ask students if anyone wants to answer the question.
I will see the list of the students who raise their hands, and I will pick who can answer it.
But I am unable to manage to unlock the student's mute by myself as I cannot be in front of my computer.
So ideally, the student can unlock the mute by him/herself.
Is that possible?
But do you think this may cause me unexpected trouble?
Please advise. Thank you.

Mikirinne