添麻烦 typically follows the pattern 给 + someone + 添麻烦. Example: 给你添麻烦 (to cause you trouble). It's a separable verb-object phrase.
culture
不好意思给你添麻烦了 is an extremely common polite expression in Chinese, reflecting the cultural value of not burdening others. It's often said even when the 'trouble' is minimal.
