It is possible to lock several Rows and several Columns at once but the manual only covers how to lock columns or rows (page 6-26 of the ClarisWorks User's Guide). For example, let's say you wanted to lock Column A and Rows 1 & 2. Follow these instructions:
1. Click to select Column header "A" (this will highlight the entire column).
2. Choose Lock Title Position from the Options menu.
3. Click and drag to select rows 1 & 2 at the far left to select entire rows.
4. Choose Lock Title Position from the Options menu.
To lock Column A & B and Rows 1 & 2:
1. Click and drag to select Column header "A" and "B".
2. Choose Lock Title Position from the Options menu.
3. Click and drag to select rows 1 & 2 at the far left to select entire rows.
4. Choose Lock Title Position from the Options menu.