There can be several reasons why you would like to pause your administration. You might want to do that when your import causes an error or you would like to pause reminders due to holidays.
In the first case it's likely you would like to pause the administration from sending invoices and reminders. Pausing the administration can be done in the 'Administration settings' => 'Invoicing'. By selecting 'Fully paused' and pressing the 'Save changes' button the administration is completely paused.
In the situation where you would go on holiday, the option 'Reminders paused' could be best suited.