You can hide rows or columns in a table and you can display hidden rows.
- Click the table.
The table toolbar appears.

- Click Hide/Show
.The pointer changes to
.
- Click row numbers to select rows to hide.
Click a row twice to clear selection.

- Click column headings to select columns to hide.
- Click Hide/Show
to hide the selected rows and columns.
For more information, see SolidWorks Help: Bill of Materials.