How to enter new invoices?

I personally use the app which I find very easy to use. The process is similar either via website or app. Though the app you log in and at the bottom right corner there is a "+" that says create: as in create an expense report. You enter the information as needed (amount, expense type, location, vendor if needed and finally a comment if you feel one is necessary. You can also attach either a screen shot or a pic of the expense which most employers want to confirm the amount. After all information is entered you save it and it goes to whoever is in charge of reviewing/approving your expense. The App makes it very easy to check and see where it is at in the approval process.