If you want to know how to SEE placements in PMax, check out this walk-through article (it's not complicated!): How to Find the Placement Report for Google Performance Max Campaigns.
If you want to exclude placement from just single PMax campaigns, you can now use this handy-dandy exclusion form from Google (also works for Keyword exclusions from individual campaigns!):
>> Performance Max Campaign Modification Request Form <<
![google pmax campaign modification request](https://cdn.prod.website-files.com/60d4661c9ce3c5390df4b425/65314f9de1b4225b2e87de6d_Screenshot%202023-10-19%20at%209.47.20%20AM.png)
Step by Step Guide for Excluding Placements in Google Performance Max Campaigns:
Step 1 :
Select a PMax campaign > Content > Placement Exclusions tab in the left hand nav, as seen here (note, adding in exclusions to a single campaign, will add them in at the ACCOUNT level):
![PMax Placement exclusion in Content tab](https://cdn.prod.website-files.com/60d4661c9ce3c5390df4b425/656f9b5b8dfd9159a3e48230_Screenshot%202023-12-05%20at%202.49.26%E2%80%AFPM.png)
Step 2:
Click the Blue edit icon. Select the "Enter" option at the top. Add desired placement. Save.
![add placement exclusion to pmax campaign](https://cdn.prod.website-files.com/60d4661c9ce3c5390df4b425/656f9bd70add8801060a7a22_Screenshot%202023-12-05%20at%202.47.42%E2%80%AFPM.png)
Step 3:
Rinse and repeat for as many placements or YouTube channels you want to exclude!
And don't forget to exclude Mobile Apps from your PMax campaigns as well.