TL:DR: 


Yes!


Campaigns > Detail > Support a Team Campaign > Select Team Campaign > Click "Supporting a Team Campaign"


The Details

As long as your individual campaign is published and NOT already connected to a Team Campaign, you can convert your individual campaign into a campaign supporting a team effort.



On your campaign dashboard, navigate to Detail and click "Supporting a Team Campaign".




Choose the team you wish to support - and click support!

Once complete, your fundraising totals will be reflected in the overall team total!



References