Use to insert a new entry prior to other entries based on the index number
entered. For example, if you select Insert before and Index 2, the
item will be second in the list.
Insert after -
Use to insert a new entry after other entries based on the index number entered.
For example, if you select Insert after and Index 4, the item will
be fifth in the list.
Replace -
Use this with a specific index to overwrite an existing entry with a new one.
Remove -
Use this with a specific index to remove that entry from the table.