For this discussion we use Sponsored Products but all the steps shown here are also applicable to Sponsored Brands and Sponsored Display.  

• From login, please follow the breadcrumbs:
• Amazon Seller >  Ads   >   Sponsored Products
• On your Sponsored Products dashboard the top section shows the charts/graphs of all your campaigns. Below this is a section that has 2 tabs: (1) Campaigns and (2) Product Group Network
  

To edit PGN: PGN Name, PGN Daily Budget, PGN Default Bid

Step 1
Choose the specific PGN you want changed

1. Click Product Group Network (PGN).
2. Your dashboard refreshes and all the PGN you have created under Sponsored Products are listed in a table.  
3. Bring your cursor to the specific PGN you want changed.

1. Go to the last column and click the 3 dots button (Action button).
2. From the dropdown list, choose Edit.

Step 2
Update your PGN with your edits.

The Edit - Product Group Bulk Editor modal appears.

Your 4 editing options include:

1. PGN Name
2. Status
3. Daily PGN Budget ($)
4. PGN Default Bid ($)

Enter the changes you want and click Save.  

Related Help Center articles:

• How to compute for the new value of your PGN Bid
• How to compute for the new value of your PGN Daily Budget
• Use Campaign Information at PGN level: Access, Monitor and Change campaign data