New users are added in the Manage Users Panel, which opens at upper right of the contract screen:
Click the "add user" icon at the top of the panel:
To share internally (with one of your teammates on Outlaw) choose "Add teammates"and click a teammate's name to instantly share this contract with them.
To add and share with an external user (a counter party, attorney, or anyone else) either "share directly" to use default user role and permissions (Non-signer, Viewer), or to customize user role and permissions choose "Add before sharing" and make the appropriate selections.
NOTE: Only contract "Owners" may set user roles and permissions as described above. Users with lower permission levels will only have the option to "share directly":