This is the screen you should see when attempting to login to the Waves platform (not the beta/new version)
This is where to make deposits of the various options listed.
Click on the button in the menu bar that looks like two arrows pointed opposite ways.
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Type in the asset ID (shown above) into one of the boxes on the screen. At that point there should be a drop-down which appears. Select the asset ID from the drop-down and it should populate in the text field.
Please note, sometimes clicking on the dropdown cause it to close before the actual item was selected. If this happens just try again and it should work but you can always refresh your browser if the trouble persists.
Here are links to some additional resources that may be helpful