On the first screen of the syn calculator you choose if you want green/red/both syn values worked out. Then below that it says
"Many products that contain Free Food are given an allowance, however those with a high energy density and low filling power, like crisps and cake, are not. If your product gets a Free Food allowance enter it below using the drop down boxes. If your product doesn’t get an allowance or doesn’t contain Green/Original Free Food, please select ‘No Free Food’. (Not sure? Click the
above.) "
From the drop down menu you select whatever is appropriate - in this case vegetarian products. A second drop down menu will appear with more detailed options - choose meat alternative, raw and then continue to enter the nutritional info as before.
Let us know how it works out as I'd be interested in whether they are syn free.