I'm using postbit_legacy but i want to hide the whole box from guests for less query execution purpose.

Your code
{vb:raw ctinfo.infobox} is working fine when i paste it in place but i want to hide it using the conditional variable from guests.
Suggestion: when some users fill only the B column fields only the box will leave the whole A column area empty, can you modify the code for next release so the column B area replaces column A area when fields of column A are empty.