Unmute all vs ask all to unmute

[Alness]

Our meeting is set to ask users when they join to allow the host to always unmute when attending our meetings.

At the end of the meeting we would like to have the option to ASK people to unmute so they can choose not to but the only option is to unmute all which results in a sudden burst of noise and potentially picking up un-needed chat.  The option was available prior to us having control over their mic, and we had to requesteach participant to unmute prior to making a comment,

Is there an option to have both - unmute all, and ask all to unmute. Or has anyone got suggestions - other than go back to requesting them to unmute throughout the meeting?