You can create accounts for your sub-contractors from the Subcontractors function in Partner.
Click the + button in the bottom left corner. Enter the e-mail address, name, title, and rate. The rate can be used to compare your own and the consultant’s hourly rate. This gives you a quick understanding if it is beneficial to use a sub-contractor for an assignment, as the rate is shown in the matching view when the role is about to be added.
Remember to change the password as the invitation process is done manually, and you are responsible for sending the sub-contractor his or her login details. The sub-contractor can also request a new password on his or her own.
Create a profile for the sub contractor and set their primary language, that will later become master for translations.