To 'Delete & Reinitialise' a company you must be in it's 'Company TAB'. Then select the 'Delete Company' button at the bottom of the window. In other words, edit this company, then down the bottom will be the delete button.
Note: no company can be simply erased without being replaced by another company.

You will then receive the following message:

NOTE: You will need to do a backup of the company you are about to delete as all data files for this company will permanently be deleted from the program.
If you press 'Click here to DELETE this Company', the following message will appear:

This message appears because straight away e-PayDay® wants to replace this company with a new one. It's asking you whether you wish to bring across various details from one of the other existing companies or start from scratch with this new company.
If you wish to use the payrates, allowances, awards etc as previously setup in one of your current companies, click on the down arrow at the end of the field and choose that company from the list and click 'OK'.
This leaves you back at this new company's Company 1 tab. Click on the 'Edit Details' button at the bottom left of the screen and proceed to amend all the appropriate details. You will need a new registration key for this company. To achieve this click on the 'Register this Company' button, which will bring up a form to print and fax off to e-PayDay®. This will be return faxed by the key with instructions on how to insert it and effectively "activate" this company.