You may have multiple Instagram accounts for different audiences. If that's the case, you can use Grocer's List on as many accounts as you'd like!
How to Add a Second Account:
Login to Grocer's List.
Select Switch Creator in the top right-hand nav.
Click the New Creator button on the modal.
You will now be taken through the flow of authorizing your Instagram and Facebook for the second account.
Note: Your second account will be a separate billing subscription than your original account.