During the negotiations, State Parties shall not introduce new and more discriminatory barriers to trade in services. For each round of negotiations, the TNF-Services shall adopt negotiating guidelines.:. 5 State Parties' lists of commitments, upon adoption, shall be an integral part of this Protocol. Individual State Parties, which are disadvantaged by reason of size, structure, vulnerability and level of development of their economy shall benefit from flexibility for the implementation of the commitments negotiated under each round of negotiations. ARTICLE 17 Temporary Movement of NaturalPersons 1. Nothing in this Protocol shall prevent a State Party from applying its laws, regulations and requirements regarding entry and stay, work, labour conditions, and establishment of natural persons provided that, in so doing, it does not apply them in a manner as to nullify or impair the benefits accruing to another State Party under the terms of a specific provision or specific market access or national treatment commitment under this Protocol. · 2. This Protocol shall not extend to measures affecting natural persons seeking or taking employment in the labour market of a State Party or confer a right of access to the labour market of another State Party. PART FOUR MATTERS RELATED TO TRADE IN SERVICES ARTICLE 18 Promotion of Trade and Investment in Services 1. 2. The State Parties shall aim to promote an attractive and stable environment for the supply of services. Such promotion should take the form, in particular, of: (a) mechanisms for information on, and identification dissemination of, services business opportunities; and {b) development of model laws, regulations and uniform and simplified administrative procedures (c) development of mechanisms for joint investments, in particular with the small and medium-sized service suppliers of the State Parties. No later than three (3) years following the entry into force of this Protocol, the TNF-Services shall establish the necessary steps for the development of such mechanisms. State Parties recognize the importance of cooperative mechanisms, technical assistance and capacity building, and Members shall enhance such cooperation inter 14