Hi there, pam0315.

You've come to the right place. Entering billable expenses is my specialty, so let me lend a helping hand in recording this in QuickBooks.

We'll begin by setting up the preferences that'll allow us to mark expenses as billable and enter a markup percentage. Let me walk you through the steps on how to do it:

1. From the Edit menu, choose Preferences.
2. Select Time & Expenses.
3. Go to the Company Preferences tab.
4. In the Invoicing Options section, check the Mark all expenses as billable option.
5. Enter the Default Markup Percentage.
   - You can leave this blank if there isn't a default percentage for the markup.
6. From the Default Markup Account drop-down menu, choose the correct account.
   - If you don't have one yet, you can always scroll up and select Add New to quickly create a markup account.
7. Click OK.

After we've set it up, allow me to guide you on how to enter the power and porta potty bills as billable expenses:

1. From the Vendors menu, select Enter bills.
2. Choose the Vendor.
3. Enter the Date.
4. Fill in the appropriate details in the following fields:
   - Account: Make sure to choose the correct account.
   - Amount: Enter the total amount of the bill.
   - Memo: You can leave this field blank if necessary.
   - Customer:Job: Choose the customer billable for this expense. Choosing the customer will automatically mark this expense as Billable.
5. Click Save & Close.

We're almost done. Now, we just need to create the invoice for the customer with the marked up amount. Here's how:

1. Click the Customers menu, then select Create Invoices.
2. Enter the customer that you entered on the bill.
3. On the Billable Time/Costs pop-up window, choose Select the outstanding billable time and costs to add to this invoice.
4. Go to the Expenses tab.
5. Select the right expense.
6. In the Markup Amount or % field, make sure the correct amount or percentage is entered.
7. In the Markup Account field, make sure the right account is selected.
8. Click OK, then Save & Close.

That should do it! I'm confident that with these resources you'll be able to enter billable expenses like a pro in no time. You'll also be all set with your Profit & Loss report after you follow these steps.

Keep in touch with me here if there's anything else you need. I always got your back. Thanks for reaching out, wishing you and your business the best.