Campaign Slots is the number of campaigns you can have running on your YTMonster account at the same time.
By default, you have 3 Campaign Slots.
You can increase this number by either:
Upgrading your account to Lite, Premium, or Pro or;
By purchasing them in our Store
Only campaigns marked as Live count towards your Campaign Slots in use. Whenever a campaign of yours is complete, the slot is automatically freed up.