If you set task and assign it to the user, but after that, you want to change assignee user or you set tasks but without assigning it to a user, you can change / set assignee:
individually
- go to asset view
- and choose another user from the assignee list
multiple
- go-to assets list
- select assets
- from the bulk menu choose ‘Assign’
- select new assignee user from the list
Chosen user will get an email notification