As a default when signing up to Ember, the platform will prepopulate the deadlines that it expects you to have coming up.
It can sometimes be the case that you have filed or paid what is required prior to joining Ember. In which case you will be able to dismiss the reminder.
Take the Corporation Tax return reminder for example.
In the My Tasks section you might notice a reminder to file your corporation tax return.
If you this return has already been filed, simply click into the tile and you will see the following screen. From here you can click 'Mark as done' to remove the reminder from My Tasks.
If you did this by accident, or later remember you have not filed this yet, simply click 'Undo' and the option to 'mark as done' and reminder will re-appear.