In this case, to cover in one briefing .......
棋一生 can brief 几度, marauder and 齐启棋 ...etc together if possible.
I am not free on 16 & 20 Apr.
棋一生, any combined briefing for 几度, marauder and 齐启棋, .....
otherwise, you may brief me first as we will be away in May for different periods.
Huasing Association 1999 - 2013