To add AND/OR condition filters between columns in Notion:
- Open your database and select the view you want to filter.
- Click on the three dots in the top right corner to access the view settings.
- In the sidebar, click on "Add a filter."
- Select the column you want to filter on, and set the conditions for that filter.
- To add more conditions to the this filter, expand the filter by clicking on the down arrow, click on the 3 dots, Add to advanced filter.
- Click Add filter and add your AND/OR condition