I want to add back/next button functionality in the given dashboard?

In the given main dashboard i want to add back button functionality how to add this functionality .
Is anyone known this how its happen please let me know

EX

Suppose i want to create one item and i want to create bill of material of same .after creating the bill of material i want to check back the item and add one item .so didnt back button here so i want to add back/next button functionality here how to do that please help
Thanks