MS Excel
To delete an embedded objects, first

Double click the object
Select the object by clicking it
Select it and then press the delete key
Press the Shift + Delete keys

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MS Excel
How do you insert a row?

Select the row heading where you want to insert the new row and click the Insert Row button on the standard toolbar
Select the row heading where you want to insert the new row and select Edit >Row from the menu
Right-click the row heading where you want to insert the new row and select Insert from the shortcut menu
All of the listed here

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