When you add a table, you choose from a number of predesigned styles that match your template. After you add a table, you can customize it however you like.
Do one of the following:
Place the table inline with text: Click in the text where you want the table to appear. The table is aligned according to the alignment of the paragraph where you added it. If the paragraph is aligned to the left, for example, you can’t center the table.
Place the table so it can be moved freely: Click somewhere other than text so there is no text insertion point. When the table is added, by default it is set to “Stay on Page” (instead of “Move with text”) so that you can position it wherever you like.
Click 
in the toolbar, then select a table or drag one to the page.
Click 
and 
to see more style options.
Do any of the following:
Type in a cell: Click the cell, then start typing.
Move the table: Click it, then drag 
in the top-left corner to move it to where you want it on the page.
Change the look of the table or its cells: Use the controls in the Table tab of the sidebar on the right. If you don’t see a sidebar, or the sidebar doesn’t have a Table tab, click 
in the toolbar.
Click the table, click in its top-left corner to select the table, then press Delete on your keyboard.