Accelerators basically interact with Instagram's API to gather the data for your main account to use.
This means that your accounts activity will be less suspicious and it will also speed up your engagement.
To set up, just add your accelerator accounts to the Hyper platform in the same way that you would add any other account.
Once they are connected, you can search for them in the search bar.
Select them and save your settings.
They should then appear like this: