Yes, when you create the bundle, you have the option to select either Group or Mix & Match. If you select Mix & Match, you can set it, so the customer's order needs to have an item for each collection selected to qualify for a % discount. So for example: Buy any Shoe, any Pants, and any Shirt and get 10% off.
Note: The "Buy/Get" feature is only available with the premium version of Bundles. Visit Bold Bundles Premium Benefits & Upgrade for more information on how to switch.