You can send invoices to Fizure right from where you receive them - your email inbox.
In case you can't use the integrations for some reason, you can also just forward documents to Fizure. Read more about email forwarding.
Let everyone in your team upload the purchase invoices on Fizure
Just go to project Settings, share the project with your team members and everyone can upload purchase invoices to Fizure when and where they happen using the tools mentioned above.