If you have signed documents outside of GetAccept, you can upload them to the Contract Manager. Simply click the upload button to the right of the search box and to the left of the slider icon.
Fill in the contract name, company name, the start and end date, signing date and the contract value.
Select who owns the document and document type and press "Upload". Now the document is uploaded and you can make all the settings for it just like a document that has been signed through GetAccept.