How can i add a custom expense category?

Hey Morteza To add a "Custom Expense category", just follow the below steps on the web interface 1. Click on the "settings" icon on the Fyle dashboard 2. On the left hand side of the screen, under the "Organization" Tab, click on the "categories" Option 3. A list of all the categories which are currently used in your Organization will show up here 4. You can use this page to enable/disable existing categories, as well use the "Add Category" button to add new Categories as per your requirement 5. Pro tip - You can also add Sub-categories using this page

Not possible yet. But you can ask about it here: https://www.fylehq.com/help/en/