See Alpha Factors Explained to understand how alpha factors are used in ODST.
Create Alpha Factor Table
Navigate to the "Activity Manager" page and click Alpha Factor Tables in the left-hand side menu.
Click "Add alpha factor table". Alpha factors are represented in a tabular format with lead times as rows and significant wave height as columns. Configure min and max wave height and wave height step to create a new table.
Add name, description and document reference as alpha factor table header information. Fill in the table form by manual input or copy paste from excel. Add lead times and wave heights as needed by using the available buttons.
Use the "Document/MOC" number prompts to cross-reference alpha factor table with relevant standards or analysis reports to ensure alignment.
Click "Save" and your alpha factor table is available as configurable option in Activities.