@Cetylite  You wanted to create a simple GI for the Open Orders? OR the Report Designer report?

Report Designer report

Hi @Cetylite  You just wanted to show all the OPEN orders from the system OR you wanted to add a filters like below.

1. Order Type
2. Order Nbr
3. Customer
4. Order Date

@Cetylite  Instead of going for a new custom report. There is already a Default Acumatica report available to fetch Sales Order Details.

Please find the screenshot for reference.

How could we add the Customer Ship To Location to this report?

@sarah  Hoping you wanted to show the below default Location from the Customer record.

If yes, in the report, you can join the BAccount/Customer table with the Location table using BAccount ID and Location ID to fetch the Location name. 

Hi @Cetylite 

You may refer to the Reports designer documentation to get an understanding on using Reports designer. Here is the online help link:
https://help.acumatica.com/Help?ScreenId=ShowWiki&pageid=e15a22db-126f-40f7-a362-e02a4ea7e4ad

Also, you can give us a list of columns you want to see on your report. We can try suggest any existing best report (like the one @Naveen Boga has suggested) you can either directly use or can customize further. 

Regards,