Hi Sunboy,
the type of essay that you are talking about need to be in the same structure as bellows- you should be okay if you follow this structure.
Advantage outweighing the disadvantage & you agree with it.
Introduction
Paragraph- 1- write on advantage (1 main idea) with fully supporting your notion- AD is better than DISAD
Paragraph 2- write on disadvantage (1 main idea) with weak supporting- remember not to corroborate the disadvantage as much as the advantage paragraph- if possible try to include some uncertainty on the effect of the main idea on the topic.
Paragraph 3- here you will have to restate that paragraph 1&2 idea & tell them that 1 is better than 2 cause of this reason & thats why you agree that Ad outclass disad. give examples here if possible too (besides para 1 & 2)
Conclusion
I hope that helped