To Jobs:
Go to the job, click on the 'Attached files' tab, here you can see a list of files attached to this job, and you can add a new file by clicking the 'Add new file' button in the top right corner.
To Estimates:
Go to the estimate, click on the 'Attached files' tab, here you can see a list of files attached to this estimate, and you can add a new file by clicking the 'Add new file' button in the top right corner.
To Customers:
Go to the customer's account, click on the 'Attached files' tab, here you can see a list of files attached to this customer, and you can add a new file by clicking the 'Add new file' button in the top right corner.
To Suppliers:
Go to the supplier, click on the 'Attached files' tab, here you can see a list of files attached to this supplier, and you can add a new file by clicking the 'Add new file' button in the top right corner.