I will like to know if there is/are any global platform to get mentoring, partnership and collaboration for Capacity Development for young water professionals especially those from developing countries?
similar thoughts were around in my mind for a while, but I have not followed up well. Do you know about https://iwa-network.org/young-water-professionals/? I am not a member, just know, that it is there. Thanks to your question, I had a look at the IWA membership - and saw, that it is possible to sign in to the platform IWA connect without being a member: https://iwa-connect.org/subscribe/ (at the bottom of the page) - "As a participant, you can contribute to our IWA network and have limited access to IWA-Connect, the global platform for water professionals, where you can participate in discussions and contribute to sharing ideas and best practice on all issues relating to water management, science and practice". Maybe this is something you are looking for?
About standard ways of writing - I don't no, sorry.