Ordermate POS is very flexible and supports 'global options'. A global option is one that can be added to any product e.g., 'pizza extras' can be added to every pizza item, as well as pizza deals, or could be added to any item in the menu if you chose to.
Note that if you create an option group that is not linked to any items, it won't be visible in your Doshii menu. For the option group to sync to Doshii, it must be linked to at least one item in your Ordermate menu.
Refer to this Ordermate help guide for more information about option groups.