Condition on products purchase

Hi there

Once an order for the “security package” is placed, the cart will need to offer the shopper the opportunity to purchase additional Mace and/or Stealth cards. The purchase of extra Mace and Stealth cards can only occur after the shopper has selected the full security package.

here is the link of website
https://www.brands-r-us.com/

can anybody help me regarding this issue?

https://www.ads-software.com/plugins/woocommerce/