Recording hat-tricks within MyCricket scorecard is easy. See the recording/follow the below steps to enter a hat-trick.
As it appears on the scorecard;
Select the 'Enter Player Scores' within the 'Matches' menu, and choose the season, round and grade for the team you wish to enter the scorecard for.
Select 'Show hat-tricks' within the 'Column Visibility options.
A new column will appear 'Hat trick # wickets' where the number of consecutive wickets (between 3 and 10) can be selected. Once complete click on 'Save'.
The hat-trick will then appear against the player in that scorecard and their bowling career report within MyCricket.