When adding transactions into MyCorbu Books, you have the opportunity to reduce your record keeping.
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I recommend entering bills as soon as they are received. This eliminates the need to keep a separate file of bills that are payable. The bill itself can be scanned and attached to the bill entry by uploading it while making the entry. See https://www.mycorbu.com/help/transactions for a deeper look.
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You can easily record the due date during the same entry. Then once or twice a month, open the Payables report to see what bills you have, total amount due, and which need paying. Note the 'Mark Paid' column on the right, just click 'mark' when paid.
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Paying bills can really be simple if you use your checking account's 'bill paying' feature. Each bill just takes a date, an amount, and a click to send. No checks. No addressing envelops. No stamps.
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When logging in invoices, you can attach a copy in the same way so that you can easily see exactly what was sent. 

Some processes that you perform in MyCorbu require changing what you are viewing. I have found that using Dual Tabs can facilitate those processes.

Dual tabs simply means having two browser tabs, or windows, open into your MyCorbu account at the same time. Some browsers let you duplicate a tab, but you can always open another tab and log in a second time.  

Here are two examples, but you can find many more.

• Add a new Category while you are entering Expense transactions.
• Check 'All Time' while preparing Invoice transaction entries.

​The minimum number of Categories is more appropriate for small firms. No one has time to manage or analyze more. 
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Add more detail later if it would really help. 
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The whole purpose is, first, to tell you something useful, and, second, to help prepare taxes. The ultimate minimum list of Categories is just the Schedule C categories that apply to you. 
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Your time is better spent analyzing Billable Ratios. 

If you are just beginning to use Custom Billing Rates and have existing time entries, there is no way to automatically add the Custom Billing Rates to those existing records.

One option is to just start using Custom Billing Rates for new records and ignore the existing records. 

If you need/want certain projects to have all records in MyCorbu, then set Custom Billing Rates the usual way for the Project (see Ref Guide BR-16), but 'reset/freeze' the new Rates as described for changing Custom Billing Rates. 
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