A key pedagogical goal in any classroom is to engage students in learning. This study examines how an English-Medium-Instruction (EMI) teacher employs available resources to engage his students in the classroom for promoting participation, keeping the lesson moving forward and meeting the pedagogical goals. The data for this study is based on a intensive fieldwork in an EMI secondary history classroom in Hong Kong. Multimodal Conversation Analysis is deployed to analyse the classroom interactional data. The classroom analysis is triangulated with the video-stimulated-recall-interviews that are analysed using Interpretative Phenomenological Analysis. The study's crucial theoretical contribution is that it broadens our comprehension of an EMI classroom as an integrated translanguaging space, which may involve various fluid and mobile translanguaging sub-spaces. This paper aims to illustrate the process of engaging students affords the teacher to create different translanguaging sub-spaces at a whole-class level and at an individual level. It is argued that creating these translanguaging sub-spaces requires the teacher to mobilise available resources for catering for the different needs of all students, which promotes interaction and inclusion in the classrooms.