First of All I Would like to Thank You for Your Purchase! You Are the Best!
Xtocky theme support the TOP 3 WooCommerce Multi vendor plugin free and pro version. Check the vendor plugins online documentation, video academy and knowledgebase are also online. See the links below.
Multi Vendor Plugin
Documentation Links
NB: Xtocky theme do not supply any Multi-vendor Primium version. Those plugins popularity high, so you can easily find desired video on youtube just searching the video