Helpo de LibreOffice 7.5
Divides previously merged cells back to the original cells. If the original cells had content that was kept when merged that content is restored.
Select the cells to be unmerged then do one of the following:
In the Formatting toolbar click:
Or, right click the selection to open the context menu and choose Unmerge Cells. If Merge Cells is present instead then the cell selection does not contain any merged cells.
Or, in the Properties sidebar clear the Merge Cells checkbox.
Or, choose Format - Merge and Unmerge Cells - Unmerge Cells
Displays the Split Cells Dialog where the split can be defined as either horizontally or vertically and the number the each cell will be split into.
Enter the number of rows or columns that you want to split the selected cell(s) into.
Splits the selected cell(s) into the number of rows that you specify in the Split cell into box.
Splits cells into rows of equal height.
Splits the selected cell(s) into the number of columns that you specify in the Split cell into box.