In Trip Manager you can add your Term's and Condition's that will be send out with your quotes and a contract that you can send with the invoice. You have the option to send these document with all quotes automatically or just add them when you send your quote.
There is two ways to add your T's&C's, or a text document or add a pdf file under Settings - Documents:
Under the Integration tab you can enable DocuSign with Trip Manager if you have an account with DocuSign.
Next step is to select your default Quote style. Once you have selected on option by default then all your quotes will be in the same model, for any particular cases you can always change the Quote when you personalize your document. Have a look under Company - Settings - Reports to choose your favorite template. You can also select the information you want to have on the Passenger Trip Sheets and Pilot Trip Sheets by clicking on Customize Trip Sheets: