💡 Detailed Explanation
The female staff member outlines a clear, step-by-step process. She first mentions confirming the land ownership (土地の所有者を調べる). Next, she emphasizes the need to establish a core group to manage the activities (運営組織を作る). Finally, she advises creating a budget plan by estimating the initial costs (必要な費用を見積もること) before they can even discuss subsidies. The other options are either out of sequence (applying for a subsidy) or premature (recruiting volunteers widely, deciding on flowers).