Toyota TNS350 Owner's Manual page 167

OTHER FUNCTIONS
● Deleting a group name
You can delete the group names
individually or all at once. If you delete
a group name, that group will return
to the default setting (excluding "No
group").
1. Touch "Delete" of "Group name".
2. Select the group you want to delete
the name of.
3. Touch "Yes".
166 TNS 350
● Deleting all the group name
1. Touch "Delete all" of "Group name".
2. Touch "Yes".