To keep an area of a worksheet visible while you scroll to another area of the worksheet, go to the View tab, where you can Freeze Panes to lock specific rows and columns in place, or you can Split panes to create separate windows of the same worksheet.
Freeze rows or columns
Freeze the first column
-
Select View > Freeze Panes > Freeze First Column.
The faint line that appears between Column A and B shows that the first column is frozen.
Freeze the first two columns
-
Select the third column.
-
Select View > Freeze Panes > Freeze Panes.
Freeze columns and rows
-
Select the cell below the rows and to the right of the columns you want to keep visible when you scroll.
-
Select View > Freeze Panes > Freeze Panes.
Unfreeze rows or columns
-
On the View tab > Window > Unfreeze Panes.
Source: Microsoft