Custom links are setup in Tools-Setup-Company-Custom Link.
- Click New to add a link
- Select the item to add a link to. For demo purposes, pick checkbooks
- Give the link a description like "Website"
- Pick an associated item, in this case a bank account
- Enter the link. You don't have to enter Http://. You can just enter the address like www. dynamicaccounting.net.
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This works well for things like bank websites, currency sites, vendor sites, etc. It's more universal than a shortcut and easier to make available to everyone.