Not every Work Order is so simple, some require parts not initially expected, and some are even for extended periods of time and include overnight accommodations. In order to add additional expenses to the work order goto the 'Payments' tab of the Work Order and begin filling the expenses. If receipts are required by the Buyer then you can easily send via the 'file' upload option or within the messaging tab.
**Also keep in mind each buyer has their own policies, additional expenses should be discussed with the buyer beforehand or they may not approve the additional expense. For example don't just assume you can stay at a hotel even if the Work Order is 4 hour drive away.
***Read each Work Order description carefully on the payment terms, as some buyers include certain parts within the initial rate and will not approve additional expenses for the parts which may be required. Message or call the buyer directly to discuss each scenario to avoid any misunderstandings.