I am assuming to use Shipping Easy - the person shipping must be logged into our Big Commerce account.
If so, right now only the "owner" can access the app through the control panel. Per the Big Commerce forum - the app owners can allow additional owners access as of May 2015 and they provided this page of instructions -
https://developers-dev.bigcommerceapp.com/api/multi-user
- How can we get this set up so I can enable access without them having to use my login id?
Right now in the "app" box nothing comes up
I found the info on the BC forum on this page
https://forum.bigcommerce.com/f5/multi-user-single-click-apps-on-the-way--24414/
Note: re: In the "app" box - under user authorization is a list of apps that I can allow the user to access - but I am told it is up to the app whether or not they will allow it (per page link above)