Option 1: Use the menu bar between cells to add an "Input Cell"
Option 2: Highlight value, right click to "Add Parameter"
Choose Table Display from the menu bar between cells and select the desired dataframe
Click the Input parameter menu button, new type from dropdown, and fill out relevant details.
Choose SQL cell from the menu between cells, select your data connection and write your query.
Click the comment icon on any cell in the Logic view to leave a comment.