It is now possible to set up products with a multiple year/period duration and invoicing once every year/period. You can have different price for different periods.
To create a product with a multiple year/period yearly invoicing select the Sales tab and then the market and product for which you want to add the product.
Click New product, select the licence type, then toggle the “Activate price per year” switch. Select the length of the licence, example 3 years.
Fill out the price information for years 1-3. Click Save.
If you want the product to have price upon request, use these settings instead.