Yes, just mute the instruments that you don't need or construct your own styles consisting of bass only.

If you are using RealStyles, click right on the Bass button and use the "Assign RealTracks" function to select the type of bass you require. If, like me, you prefer unembellished lines, I would recommend that you use 'simple' or 'very simple' for the Neil Swainson bass lines. Simon Planting and Jodi Proznic are really good lines for their '4 only' styles but there are less tempos to select from and they sit at the faster end of your nominated tempos.

All of the jazz styles are together on the list. Start with the first Gypsy Jazz bass styles by Simon Planting and work down the list through the Neil Swainson and Jodi Proznic styles until you get to the jazz waltz styles. There are some others that might suit but that is the location of most of the swing walking bass styles.

Grah Jive Talk
"Don't worry baby, they'll swing their arses off."