Unable to turn on Hotspot on Ubuntu mate 18.04.02

I have been trying to turn on hotspot in mate desktop. But I don't see any GUI options to turn on hotspot. I've tried to create hotspot with these guidelines.
( Use Your Ubuntu-MATE 16.04 Laptop As A Wi-Fi Hotspot ).
Still the SSID doesn't appear on my mobile phone. I feel like I miss something in this process. please help me out.

Did you verify that your wifi card supported master mode?
Hopefully the following link might help

I have the same situation with 20.04

You can use https://github.com/lakinduakash/linux-wifi-hotspot