The host can help the discussion to keep moving and also ensure it is well conversed in the philosophy so it doesn’t become a mental speculation brainstorm session.
It is preferable that the host (or group of hosts) prepares the topic with sastric evidence to ensure the discussion doesn’t get side-tracked or lose its philosophical backbone at any point. This type of preparation is supported by our Acharyas.
Tattva Sandharba (Verse quoted in commentary of Text 7)
gūḍhārthasya prakāśaś ca
sāroktiḥ śreṣṭhatā tathā
sandarbhaḥ kathyate budhaiḥ
“The wise call a composition a sandarbha when it shines light on a difficult subject, concentrates on essentials, excels in composition, imparts a variety of complex ideas, and expresses itself lucidly.”
Literally, the word sandarbha means “stringing together.” In the Sandarbhas Śrīla Jīva has explained Śrīmad-Bhāgavatam not by commenting on each verse one after another, as normally done, but by systematically presenting various topics, which he painstakingly develops by “stringing together” relevant verses from the entire Bhāgavatam, along with his own elucidations and those of other commentators.”
Utilizing this concept to prepare for the topics being discussed will give a powerful impression and leave a long-lasting effect on your audience.