Different setup levels of your Header Bidder
You can decide In HB Manager whether you want to run Prebid settings on global level (affecting all of your placements), publisher level (affecting Publisher's placements) or if you'd like to have different settings for each placement.
This is so that it is as easy as possible for you to create cross Publisher/site setups of your most common placements, but at the same time give you the opportunity to really dig in and granularise your prebid setups exactly as you want to.
The 3 main levels the HB Manager works with are:
- The Global level: This is intended for your most common placements types and prebid parameters that will be used across your entire Publisher/website network.
- The Publisher level: If you prefer to override your Global Placements types/prebid Parameters or simply add additional ones for a particular Publisher, you can do so in the Publisher account. You can override your Global Placements types/Bid Parameters or simply add additional ones for a particular Publisher in the Publisher account. This will then be available to all the Websites in that particular Publisher account.
- The Website Level: You can override your Global Placements types/preid Parameters or your Publisher account Placement types/prebid parameters in the site level. You can even create multiple "Section" or "Placement" instances per website. This enables you to have a completely different Prebid setup for a particular placement or section if needed.
Utilising these different levels or hierarchies can very useful in situations where you want run specific Bidder/SSP setups, have different adservers involved, or when you want to run prebid setups based on specific media types. For instance, when you want a different prebid setup for your Video Bidders/SSPs. You could even create a unique prebid setup for each placement on each webpage/article but we certainly do not recommend you to do it!
Setting up your Global Placement types and Bid Parameters
First navigate to HB Management -> Global HB Management.
We recommend that you think about the Placement types that you intend to run across most or all your Publishers/Websites when setting up your Global placements and Bid parameter. 
By pressing Placement types in the Global HB Management area, you can create the type of placements you intend to use:
Normally you would give the placement type a name and then add the dimensions the placement type is intended to call. Click Dimensions to add all of the dimensions the placement type is intended to call. More on this in Setting up Placement Types. You can also setup a viewport configuration, if you intend to use Responsive placements on your website:
You don't have to add any Prebid paramters unless you want/need to. There are cases where certain Bidders require you to enter in additional information, but we will always help you with this during the Onboarding phase. If you are uncertain, feel free to reach out to our support. Please notice that if you select to add a Prebid parameter to a particular placement, it will only apply to that particular placement.
If you want to add a global Prebid parameter, you simply press the Bid parameters button in the HB management, next to the Placement types we just edited above. This will bring you to these options:
Here you can add Prebid parameters that will apply to all your Prebid setups, unless you override them on a lower level. So it may be useful if you plan to use them everywhere.
The Generic placement data in the view above will give you the option to add generic data for your placements, such as borders or other custom parameters. This is also where you would activate Prebid server so you can call both Client-side and Server-side.