If for some reason you got the start date wrong for your people or it needs to be updated from the original date on sign-up, as an Admin you can do this in Frankli. Here's how.
Navigate to your Admin Dashboard
Using your available sidebar menu items, click on 'Admin' and then 'Company'.
Next click in on your existing view of all people under 'Company View'.
Navigate or search for the person who's start date you want to change and then from the available 'Actions', select 'Edit' as highlighted below.
The 'Start date' field is located at the bottom of the Administrate Person page as highlighted below.
Once you are happy with your changes to 'Start date' be sure to click the button titled 'Update Person'.
Changes will be active immediately and visible from the Company View table as shown above.