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If the file you wish to attach has previously been uploaded to your portfolio (either directly from the documents area or to another event) then you can select it from the Kaizen risr/advance file browser on screen. Attach it to the event by clicking the Link this button. Alternatively if it's a new file then you can simply drag and drop from your computer onto this upload box or click on the upload box to show your computer's file browser and select the file you want to upload that way.
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