When scheduled meeting our lead/contact get whatsapp massage.

can we ask him if he is comming, and give him an ubility to cancel meeting or approve meeting, and his answer will approve an a meeting or cancel it, (we have a picklist field in the meetings record - approved/not_approved).

also if he still didnt approved then it give an a Signal to the host, 5 hours before. and send another massage to the lead/contact that he still didnt confirmed.

Can it be Done ?