When assigning an item to yourself, you have two options to do this. The first is by using the drop-down for 'Assigned to' and choosing 'Assign to me'.

Or in the search module for 'Assign To' type in 'me' and your name will appear.

When assigning an item to yourself, you have two options to do this. The first is by using the drop-down for 'Assigned to' and choosing 'Assign to me'.
Or in the search module for 'Assign To' type in 'me' and your name will appear.