Done according to a plan; deliberate, systematic, or scheduled. Depending on context, it can also mean premeditated (with a negative nuance).
彼は計画的に毎日二時間勉強している。
He studies two hours every day in a planned way.
計画的な貯金を始めたので、半年で旅行代金が貯まった。
I started saving systematically, so I had enough for the trip in six months.
犯行は計画的だったと警察が発表した。
The police announced that the crime was premeditated.
計画的な人事異動でチームのバランスを整えた。
They adjusted the team's balance through planned personnel transfers.