Cells in Gigasheet are a bit unique. It is not possible to edit the value or contents of a cell. It is possible to filter out values, or add news cells from a function, but you can not alter the values of cells once they are in Gigasheet. 

Wrap Text:

Wrap Text is a feature that shows all information in a cell, even if it overflows the cell boundary. To apply this function, simply select the column title of the column you wish to apply the function to. Then, simply select the “Wrap Text” option from the dropdown menu.