Click on Options in the function bar below the main menu. Click the plus sign in front of both Global Options and select Video inputs.
In the list activate the corresponding inputs and select the type of input, i.e. DVI, DHMI, Display Port or SDI. If your card has several inputs you need to specify the corresponding index for each of them as well.
Wings Vioso RX provides all available inputs with an index. If your PC is equipped with two input cards with four inputs each, the inputs for the second card are indexed 5 to 8.
See also