DND 5E Customizing Lost Mines of Phandelver

Hello, I hope I'm posting this in the correct place. I have purchased the module for the Lost Mines of Phandelver and love all of the premade maps, handouts, and everything. I would like to allow my players to make their own characters and some have asked about playing as goblins. I know that Volo's would allow for the goblins as a playable character race, but my concern is that after purchasing Volo's, that it would replace Lost Mines as the module for the game. Is there a way that purchasing Volo's would just give the game additional resources? Thank you

Purchasing Volo's will expand your Compendium, and provide you with an Addon you can import into your existing Game on the Game Details page.  The Addon includes prebuilt Lairs for various monsters. The Lost Mines of Phandelver, as an official module, has Vault Access which will let your players create characters in their own games and import them to your game using the Character Vault.