If there is not already an <em>Operations bulk form</em> in the <em>Fields</em> list for the view, click <em>Add</em> in the <em>Fields</em> section to add it. (The exact name of the bulk form field will vary, and may contain keywords like "bulk update", "form element" or "operations" -- not to be confused with <em>operations links</em>, which are applied to each item in a row.) If the bulk operations field already exists, click the field name to edit its settings.