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 its appearance.
Do one of the following:
Place the table inline with text: Click where you want the table to appear. The table matches the paragraph’s justification, so if the paragraph is left justified, 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 it’s added, the table is set to “Stay on Page,” so you can position it where you like.
Click 
in the toolbar, then click a table layout or drag one to the page.
Click the left and right arrows to see more style options.
Do any of the following:
Move the table: Click it, then drag 
in the top-left corner to move it to where you want it on the page.
Type in a cell: Click the cell, then enter your content.
Change the appearance of a table or its cells: Use the controls in the sidebar on the right.
Click the table, click in its top-left corner to select the whole table, then press Delete.