Login in using administrator ID,click 
,
click
to show dialog,
First you must select the menuitem which
you want to build the BOM(bill of material) ,and click
like the red circle in the upper picture.
Example:I want to build BOM(bill of
material) about ¡®taro perearl milk tea¡¯ in main class¡¯coffee specials¡¯,so
I first to click main class
,then click menuitem 
,last click
page button,as following,
Now,in the left top will show
,this message mean your current menuitem is¡¯taro
pearl milk tea¡¯ ,after click 
,show as following,
Click the drop down button
,you can select ¡®material¡¯,select
¡®unit¡¯ input count in ¡®#¡¯field,last click 
to add one meterial to BOM(bill of material)
In the left ,you can modify one line of BOM(bill of material),but remember to ¡®save modified¡¯
As a example result,we build a BOM(bill of material) about ¡®taro pearl milk tea¡¯, like this,
Select option 
to tell system deduct it¡¯s inventory material
when sales ¡®taro pearl milk tea¡¯ automatically. Last you must click 
to save your setting.
As a fast way to build BOM(bill of
material) of menuitem,this menuitem just have one simgle material and this
material count is ¡®1¡¯.in case of this,you don¡¯t need to build BOM(bill of material) one step by step,direct to select option 
and click 
to save your setting.
system will build BOM(bill of material)
of just one simgle material for you automatically.it¡¯s material name is
same as menuitem name ,unit is ¡®unit¡¯,and will add conresponding material in
¡®material definition¡¯ 
automatically
.