Vtiger CRM Booster Packs are add-ons made available in the CRM that help you upgrade your feature limits. You can avail and use the upper limits for various features in your CRM editions by buying or installing them directly.
Vtiger CRM Booster packs:
Are paid add-ons.
Can be installed only if you have a subscribed account with Vtiger CRM.
Can be accessed and installed only by Admin users.
Installed booster pack features can be accessed and used by all users.