Steps
Open the DingTalk desktop app > click Mail in the left sidebar > click the
icon in the upper-right corner > Mail Contacts > click … next to Contacts > New group.
Contacts
Create a Contact Group
Open the DingTalk desktop app > click Mail in the left sidebar > click the icon in the upper-right corner > Mail Contacts > click … next to Contacts > New gro
icon in the upper-right corner > Mail Contacts > click … next to Contacts > New group.