Power BI is a business analytics service by Microsoft that provides interactive visualizations and business intelligence capabilities with an easy-to-use interface. While Power BI itself is not a planner tool, you can use Power BI to create reports and dashboards to visualize data related to planning activities.

If you want to use Power BI for planning purposes, here are some steps you can follow:

1. Data Source: Identify the data sources relevant to your planning activities. This could include data from Excel, databases, SharePoint, cloud services, or other sources.

2. Data Transformation: Depending on your data sources, you may need to clean, transform, and shape the data to make it suitable for analysis and visualization in Power BI. Power BI has a built-in data transformation editor called Power Query, which can help you with this task.

3. Data Model: Create a data model in Power BI by defining relationships between different tables, if applicable. The data model allows you to combine data from multiple sources and create meaningful relationships between different data elements.

4. Visualizations: Use the various visualization options in Power BI to create charts, graphs, tables, and other visual elements that can represent your planning data effectively. For instance, you can create bar charts for budget comparisons, line charts for project timelines, or pie charts for resource allocation.

5. Dashboard and Reports: Combine multiple visualizations into a dashboard or report to present a comprehensive view of your planning data. Dashboards can provide an overview of key metrics and allow for interactive exploration.

6. Share and Collaborate: Once you have created your Power BI dashboard or report, you can share it with others in your organization, enabling collaborative decision-making and planning.

Remember that Power BI is just a tool to visualize and analyze data. The actual planning process will depend on your specific needs and the domain you are working in (e.g., financial planning, project planning, resource planning, etc.). Power BI can be a powerful tool in assisting with the planning process by providing insights and facilitating data-driven decision-making.