I apologize if this has been asked before. But is there a way for me to share my account or add a DM to the campaign? 

Nope. Once a campaign is created it is permanently tied to its creator as the DM and sharing your account is against site rules.

I was just curious if there was a way to have two DM for an encounter/campaign. That way through the Avrea bot, they can run it with the shared content. 

Another user can make a campaign, and you can join as a player and share content even as a player.

Ah! so if they make the campaign and I have shared content, All the people on the campaign I join will have access to it?

Quote from Salome_the_Dark >>

Ah! so if they make the campaign and I have shared content, All the people on the campaign I join will have access to it?

 Yes, if you hit the enable content sharing button on that campaign (or if someone has the subscription and enables content sharing on that campaign)

Correct. If any one person in the campaign activates content sharing for that campaign then all content owned by anyone in that campaign will be automatically shared with everyone in the campaign. The DM need be neither the one who activated content sharing, nor the owner of said content.

Thank you both! I appreciate it! please stay safe and have a great week!

IDK if this was mentioned, but at least one member must be subscribed to share.