How to create a webhook for a DingTalk alarm

DingTalk supports webhook settings on PC, but not on mobile. The only person who can set a webhook is the group owner.
Step 1: Create a DingTalk group and click "Group Settings".
Step 2: Click "Group Assistant".
Step 3: Click "Add Robot".
Step 4: Choose "Custom" to enter the robot details page, then click "Add".
Step 5: Enter a Chatbot name, enable "Custom keywords" under security settings and type the keyword "Alarm". Accept the agreement and click "OK".