Thanks for coming back, jfederico.
I appreciate you for performing the recommended solutions provided by my colleagues. Though they can see the employee's expense, however, they can't edit or modify the transaction in QuickBooks Online (QBO).
For them to see vendor transactions, just place a checkmark on the Vendor option. You can follow the steps provided by Adrian_A above.
I have a link here that provides you with articles about managing your account: https://quickbooks.intuit.com/learn-support/manage-your-account/misc/02/manage-your-account-au?label....
Keep me posted if you need a hand with running reports or any QBO related. I'll be here to ensure your success. Take care always.