In a grid card or worksheet, tap on a row or column header to synchronize data across any linked cards.
For example, if a column header is titled May 20, then your selection of it displays the values for May 20 on any other grids that share this dimension.
When you tap on a row or column header, the whole row or column displays in a blue outline. This ensures you can easily relocate it as you scroll across a grid.
You can select only one row or column at a time.
To deselect a row or column, tap on a grid cell.