MagManager provides multiple options for different invoicing periods. The default is per issue and you can also choice to invoice, twice per issue, 2 monthly, quarterly, 4 monthly, 6 monthly, Annually or other intervals. For bi-monthly publications who invoice monthly, there is the option to set the default invoice period to twice per issue.
Steps to switch on invoicing periods
Step 1 - Go to the main Settings page.
Step 2 - Under Settings > Select System Defaults.
Step 3 - Click the toggle switch beside Use Invoice Periods.
Step 4 - Click Update to save.
Steps to set the invoicing period for each client
Step 1 - Open the client record > Select the Details tab.
Step 2 - Choose the 'Invoice Period' from the drop-down box > Select the date for 'Last Invoice in'.
Step 3 - Click Update to save.
How to find the invoicing periods on the ‘To Invoice’ tab of the Invoicing Screen
When you view the invoicing screen and select the To Invoice tab. You will now see additional tabs below with each of the active invoice periods.
In the example below for Quarterly invoicing, an invoice is generated for bookings in May, June & July. This client will next show up to be invoiced for the August issue for their bookings in August, September & October.
Invoice Period Tabs
Note: The additional invoice period tabs will only appear if there are bookings to be invoiced in those periods. Annually does not appear above as there are no annual bookings in this issue.
Steps to set the default invoice period to twice per issue invoicing for bi-monthly publications
For bi-monthly publications, to invoice ALL clients on a twice per issue basis, the default invoice period can be set to twice per issue. This saves you having to update the individual client records.

Step 1 - Go to the main Settings page.
Step 2 - Under Publications & Bookings > Select Publications.
Step 3 - Select the Defaults tab.
Step 4 - Locate the Invoice period drop-down and set it to Twice Per Issue.
Note: When twice per issue invoicing is set as the default. Any clients who wants a single invoice rather than two invoices would need to have their Invoice Period set to 2 Monthly on their client details tab.
Step 5 - When making a booking the full amount is added.

Step 6 - The full amount is split in two and half is invoiced each month. When invoicing, the amount box is highlighted red, to indicate this is the first invoice of two to be generated.

The amount box is highlighted green, to indicate this is the second invoice being generated.

Full details on How to set up twice per issue invoicing can be found in these notes.

