How to add multiple items into Simulation Set by using Spredsheet?

Summary:

Hi, I want to know how to add multiple items into Simulation Set by using Spredsheet.

I described details below.

Content (please ensure you mask any confidential information):

Now, customer is using BOR so that it needs to prepare Input Simuation Set to execute the job which create BOR.

As Initial preparation/migaration, it's possible to use "Add to Simulation Set" below in Plan Inputs screen.

And when new items occured, then thoes items should be added the input simulation set.

Especially when new product is launched the new items are more than 1000 items.

So it might be difficult to use "Add to Simulation Set" in Plan Inputs screen.